運(yùn)行效果

?

D:wangcCLionProjects	est1212cmake-build-debug	est1212.exe

????????????????????????????????????????????????【學(xué)生管理系統(tǒng)2.0】
????????????????★————————————————————————————————————————★

???????????????????????????|?1.?信息錄入????????????????2.?成績(jī)錄入?????????????3.?信息查詢??|

???????????????????????????|?4.?成績(jī)查詢????????????????5.?刪除信息?????????????6.?信息追加??|

???????????????????????????|?7.?更改分?jǐn)?shù)????????????????8.?查看排名?????????????9.?成績(jī)分段??|

???????????????????????????|?10.保存文件????????????????11.文件輸出?????????????12.文件導(dǎo)入??|

????????????????★————————————————按0并回車退出——————————————————★
請(qǐng)輸入執(zhí)行數(shù)字:1
*****************************************************信息錄入***********************************************************
依次鍵入學(xué)號(hào)、姓名、性別、宿舍號(hào)碼、電話號(hào)碼，用一個(gè)【空格】隔開(kāi)各數(shù)據(jù),每一條輸入完成后按回車鍵進(jìn)行下一條輸入。
?????????????????????????????????????????????【退出請(qǐng)輸入'0'并回車】

樣例:
541913460230?張三?男?1717?66666
在此輸入:
1001?張三豐?男?521?888888
1001?張三豐?男?521?888888

1002?李四?男?522?555555
1002?李四?男?522?555555


0
0
請(qǐng)輸入執(zhí)行數(shù)字:3
請(qǐng)?jiān)诖溯斎?1002
1002
輸入了錯(cuò)誤的第一次選擇數(shù)字！重新輸入:
3
3
輸入了錯(cuò)誤的第一次選擇數(shù)字！重新輸入:
0
0
輸入了錯(cuò)誤的第一次選擇數(shù)字！重新輸入:
1
1
通過(guò)學(xué)號(hào)(輸入1),姓名(輸入2):1
1

輸入學(xué)號(hào)(輸入0并回車結(jié)束):1001
1001
學(xué)號(hào):1001?姓名:張三豐?性別:男?宿舍號(hào)碼:521?電話號(hào)碼:888888

輸入學(xué)號(hào)(輸入0并回車結(jié)束):

?

源碼

?

#include
#include
#include
#include
#define?LEN?sizeof(struct?student)
struct?student
{
????char?num[20];//學(xué)號(hào)
????char?name[20];//姓名
????char?sex[20];//性別
????char?room[20];//宿舍號(hào)碼
????char?tel[20];//電話號(hào)碼

????char?CHN[20];//語(yǔ)文
????char?MATH[20];//數(shù)學(xué)
????char?ENG[20];//英語(yǔ)
????char?PE[20];//體育
????char?PRO[20];//專業(yè)
????char?average_score[20];//平均分

????struct?student?*next;
};
int?n;//節(jié)點(diǎn)數(shù)

struct?student?*creat();//信息錄入
void?score(struct?student?*head);//成績(jī)錄入
void?findinformation(struct?student?*head);//信息查詢
void?findscore(struct?student?*head);//成績(jī)查詢
struct?student?*del(struct?student?*head);//信息刪除
struct?student?*insert(struct?student?*head);//信息插入
void?update(struct?student?*head);//修改分?jǐn)?shù)
void?Oscore(struct?student*head);//排序輸出
void?swap(struct?student*p1,struct?student*p2);//交換數(shù)據(jù)
void?fenduan(struct?student*head);//分段輸出
int?checknum(char?ch[]);//檢查純數(shù)字的數(shù)據(jù)里是否混入了非數(shù)字的非法輸入
int?transformint(char?ch[]);//純數(shù)字整數(shù)(字符串轉(zhuǎn)向int類型)
void?save(struct?student?*head);?//文件存儲(chǔ)
void?export1();//文件輸出
struct?student?*import();//文件導(dǎo)入
int?checkscore(char?ch[]);//檢查分?jǐn)?shù)是否為0-99的純數(shù)字
int?IncludeChinese(char?*str);?//檢查性名、性別是否包含漢字
int?main()
{
????//微信關(guān)注公眾號(hào)：C語(yǔ)言中文社區(qū)，免費(fèi)領(lǐng)取更多
????struct?student?*head=NULL;
????char?choose[20];
????menu://設(shè)置主菜單的點(diǎn)
????printf("
");
????printf("						【學(xué)生管理系統(tǒng)2.0】					
");
????printf("		★————————————————————————————————————————★

");
????printf("			???|?1.?信息錄入		2.?成績(jī)錄入		3.?信息查詢??|

");
????printf("			???|?4.?成績(jī)查詢		5.?刪除信息		6.?信息追加??|

");
????printf("			???|?7.?更改分?jǐn)?shù)		8.?查看排名		9.?成績(jī)分段??|

");
????printf("			???|?10.保存文件		11.文件輸出		12.文件導(dǎo)入??|

");
????printf("		★————————————————按0并回車退出——————————————————★
");
????printf("請(qǐng)輸入執(zhí)行數(shù)字:");
????while(scanf("%s",choose)&&checknum(choose)==0)//檢查到不是純數(shù)字?讓用戶重新輸入
????{
????????printf("輸入無(wú)效，重新輸入:");
????}
????switch(transformint(choose))
????{
????????case?1:
????????????head=creat();
????????????break;
????????case?2:
????????????score(head);
????????????break;
????????case?3:
????????????findinformation(head);
????????????break;
????????case?4:
????????????findscore(head);
????????????break;
????????case?5:
????????????head=del(head);
????????????break;
????????case?6:
????????????head=insert(head);
????????????break;
????????case?7:
????????????update(head);
????????????break;
????????case?8:
????????????Oscore(head);
????????????break;
????????case?9:
????????????fenduan(head);
????????????break;
????????case?10:
????????????save(head);
????????????break;
????????case?11:
????????????export1();
????????????break;
????????case?12:
????????????head=import();
????????????break;
????}
????if(transformint(choose)<0||transformint(choose)>12)//輸入了不在執(zhí)行數(shù)字范圍內(nèi)的數(shù)字返回主菜單的點(diǎn)
????{
????????system("cls");//清理屏幕和緩沖區(qū)
????????fflush(stdin);
????????goto?menu;
????}
????if(transformint(choose)!=0)//輸入不是0，繼續(xù)回到主菜單
????{
????????goto?menu;
????}
????system("cls");//結(jié)束時(shí)清理屏幕和緩沖區(qū)，打印下方的校徽
????fflush(stdin);
????printf("
感謝使用！
");
????printf("
?????????????????????????????????????????????????????*
");
????printf("????????????????????????????????????????????????*??***??****
");
????printf("??????????????????????????????????????????????***?****?****
");
????printf("?????????????????????????????????????????????****?****?****?****
");
????printf("?????????????????????????????????????????????****?****?****?****
");
????printf("?????????????????????????????????????????????****?****?****?****
");
????printf("?????????????????????????????????????????????****?****?****?****
");
????printf("?????????????????????????????????????????????****?****?****?****
");
????printf("??????????????????????????????????????????????****?*******?****
");
????printf("????????????????????????????????????????????????*************
");
????printf("????????????????????????????????????????????????????*****
");
????system("pause");
????return?0;
}

struct?student?*creat()//錄入信息，創(chuàng)建鏈表
{
????system("cls");
????fflush(stdin);
????printf("*****************************************************信息錄入***********************************************************
");
????printf("依次鍵入學(xué)號(hào)、姓名、性別、宿舍號(hào)碼、電話號(hào)碼，用一個(gè)【空格】隔開(kāi)各數(shù)據(jù),每一條輸入完成后按回車鍵進(jìn)行下一條輸入。?????????
");
????printf("?????????????????????????????????????????????【退出請(qǐng)輸入'0'并回車】?????????????????????????????????????????????????????
");
????printf("樣例:
541913460230?張三?男?1717?66666
在此輸入:
");
????n=0;
????struct?student?*head,*p1,*p2;
????head?=?NULL;
????p1=p2=(struct?student*)malloc(LEN);

????while(scanf("%s",p1->num)&&checknum(p1->num)==0)
????{
????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????}
????if(transformint(p1->num)==0)//輸入了0退出函數(shù)調(diào)用，傳回去表頭指針head給主函數(shù)的head
????{
????????system("cls");
????????fflush(stdin);
????????return(head);
????}
????while(scanf("%s",p1->name)&&IncludeChinese(p1->name)==0)//這幾行while(scanf)都是具有容錯(cuò)的輸入，整個(gè)程序中都存在輸入容錯(cuò)！?。?????{
????????printf("輸入錯(cuò)誤的名字，重新輸入:
");
????}
????while(scanf("%s",p1->sex)&&IncludeChinese(p1->sex)==0)
????{
????????printf("輸入錯(cuò)誤的性別，重新輸入:
");
????}
????while(scanf("%s",p1->room)&&checknum(p1->room)==0)
????{
????????printf("輸入錯(cuò)誤的宿舍號(hào)碼，重新輸入:
");
????}
????while(scanf("%s",p1->tel)&&checknum(p1->tel)==0)
????{
????????printf("輸入錯(cuò)誤的手機(jī)號(hào)碼，重新輸入:
");
????}
????printf("
");
????while(transformint(p1->num)!=0)//輸入每個(gè)節(jié)點(diǎn)的學(xué)號(hào)不是0的時(shí)候開(kāi)始循環(huán)。
????{
????????n+=1;//節(jié)點(diǎn)+1
????????if(n==1)????//PS:此處為建立鏈表常規(guī)過(guò)程(參考了譚浩強(qiáng)C程序設(shè)計(jì)第九章鏈表，紅皮那本)
????????{
????????????head=p1;//第一個(gè)節(jié)點(diǎn)?表頭指向上面開(kāi)辟的第一個(gè)節(jié)點(diǎn)?p1?p2?head都指向此處此時(shí)
????????}else
????????{
????????????p2->next=p1;//后面的節(jié)點(diǎn)，p2的next指向p1將兩個(gè)節(jié)點(diǎn)連接到一起
????????????p2=p1;//p2再跟p1
????????}
????????p1=(struct?student*)malloc(LEN);//p1指向開(kāi)辟的新節(jié)點(diǎn)
????????while(scanf("%s",p1->num)&&checknum(p1->num)==0)
????????{
????????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????????}
????????if(transformint(p1->num)==0)
????????{
????????????break;
????????}
????????while(scanf("%s",p1->name)&&IncludeChinese(p1->name)==0)
????????{
????????????printf("輸入錯(cuò)誤的名字，重新輸入:
");
????????}
????????while(scanf("%s",p1->sex)&&IncludeChinese(p1->sex)==0)
????????{
????????????printf("輸入錯(cuò)誤的性別，重新輸入:
");
????????}
????????while(scanf("%s",p1->room)&&checknum(p1->room)==0)
????????{
????????????printf("輸入錯(cuò)誤的宿舍號(hào)碼，重新輸入:
");
????????}
????????while(scanf("%s",p1->tel)&&checknum(p1->tel)==0)
????????{
????????????printf("輸入錯(cuò)誤的手機(jī)號(hào)碼，重新輸入:
");
????????}
????????printf("

");
????}
????p2->next=NULL;//最后p1開(kāi)辟的新節(jié)點(diǎn)丟棄了，讓p2的next指向空，形成表尾結(jié)束鏈表。?錄入結(jié)束
????system("cls");
????fflush(stdin);
????return(head);
}

void?score(struct?student?*head)//拿到鏈表,錄入成績(jī)
{
????system("cls");
????fflush(stdin);
????printf("*****************************************************成績(jī)錄入***********************************************************
");
????printf("依次鍵入語(yǔ)文、數(shù)學(xué)、英語(yǔ)、體育、專業(yè)成績(jī)，用一個(gè)空格隔開(kāi)各數(shù)據(jù),每一條輸入完成后按回車鍵進(jìn)行下一條輸入。
");
????printf("??????????????????????????????????????????????【錄完分?jǐn)?shù)后自動(dòng)退出】??????????????????????????????????????????????????????
");
????printf("例如:
10?20?30?40?50
在此輸入:
");

????int?Aver;//平均分
????struct?student?*p;
????for(p=head;p!=NULL;p=p->next)//遍歷鏈表
????{
????????printf("
現(xiàn)在錄入%s（%s）的成績(jī)
",p->name,p->num);
????????while(scanf("%s",p->CHN)&&checkscore(p->CHN)==0)
????????{
????????????printf("輸入錯(cuò)誤的語(yǔ)文分?jǐn)?shù)，重新輸入:
");
????????}
????????while(scanf("%s",p->MATH)&&checkscore(p->MATH)==0)
????????{
????????????printf("輸入錯(cuò)誤的數(shù)學(xué)分?jǐn)?shù)，重新輸入:
");
????????}
????????while(scanf("%s",p->ENG)&&checkscore(p->ENG)==0)
????????{
????????????printf("輸入錯(cuò)誤的英語(yǔ)分?jǐn)?shù)，重新輸入:
");
????????}
????????while(scanf("%s",p->PE)&&checkscore(p->PE)==0)
????????{
????????????printf("輸入錯(cuò)誤的體育分?jǐn)?shù)，重新輸入:
");
????????}
????????while(scanf("%s",p->PRO)&&checkscore(p->PRO)==0)
????????{
????????????printf("輸入錯(cuò)誤的專業(yè)分?jǐn)?shù)，重新輸入:
");
????????}
????????Aver=(transformint(p->CHN)+transformint(p->MATH)+transformint(p->ENG)+transformint(p->PE)+transformint(p->PRO))/5;
????????itoa(Aver,p->average_score,10);//Aver十進(jìn)制形式轉(zhuǎn)化為字符串存儲(chǔ)在鏈表的average_score平均分里
????????printf("%s的成績(jī)錄入完了
",p->name);
????}
????system("cls");
????fflush(stdin);
}

void?findinformation(struct?student?*head)//學(xué)生信息查詢
{
????system("cls");
????fflush(stdin);
????char?choose1[20],choose2[20];//兩個(gè)選擇的地方，choose1選擇學(xué)號(hào)/姓名?or?宿舍號(hào)?，choose2在選擇了學(xué)號(hào)/姓名時(shí)選擇?學(xué)號(hào)?or?姓名
????char?num[20]={'1'};//用戶即將輸入的學(xué)號(hào)
????char?name[20];//用戶即將輸入的姓名
????char?room[20]={'1'};//用戶即將輸入的宿舍號(hào)
????struct?student?*p;
????p=head;
????int?flag=0;
????printf("*****************************************************信息查詢***********************************************************
");
????printf("
選擇查找方式,學(xué)號(hào)/姓名查找(輸入1),宿舍號(hào)(輸入2)
請(qǐng)?jiān)诖溯斎?");
????choosestation1://第一次選擇的點(diǎn)
????fflush(stdin);
????while(scanf("%s",choose1)&&checknum(choose1)==0)
????{
????????printf("輸入無(wú)效，重新輸入:
");
????}
????if(transformint(choose1)==1)
????{
????????printf("通過(guò)學(xué)號(hào)(輸入1),姓名(輸入2):");
????????choosestation2://第二次選擇的點(diǎn)
????????fflush(stdin);
????????while(scanf("%s",choose2)&&checknum(choose2)==0)
????????{
????????????printf("輸入無(wú)效，重新輸入:
");
????????}
????????if(transformint(choose2)==1)
????????{
????????????while(transformint(num)!=0)
????????????{
????????????????printf("
輸入學(xué)號(hào)(輸入0并回車結(jié)束):");
????????????????while(scanf("%s",num)&&checknum(num)==0)
????????????????{
????????????????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????????????????}
????????????????for(p=head;p!=NULL;p=p->next)
????????????????{
????????????????????if(transformint(p->num)==transformint(num))
????????????????????{
????????????????????????printf("學(xué)號(hào):%s?姓名:%s?性別:%s?宿舍號(hào)碼:%s?電話號(hào)碼:%s
",p->num,p->name,p->sex,p->room,p->tel);
????????????????????????flag=1;
????????????????????????break;
????????????????????}
????????????????}
????????????????if(flag==0&&transformint(num)!=0)
????????????????{
????????????????????printf("未找到此學(xué)生信息
");
????????????????}
????????????}
????????}else?if(transformint(choose2)==2)
????????{
????????????while(name[0]!='#')
????????????{
????????????????printf("
輸入姓名(輸入#并回車結(jié)束):");
????????????????scanf("%s",name);
????????????????for(p=head;p!=NULL;p=p->next)//遍歷鏈表
????????????????{
????????????????????if(strcmp(p->name,name)==0)//比較兩字符串
????????????????????{
????????????????????????printf("學(xué)號(hào):%s?姓名:%s?性別:%s?宿舍號(hào)碼:%s?電話號(hào)碼:%s
",p->num,p->name,p->sex,p->room,p->tel);
????????????????????????flag=1;
????????????????????????break;
????????????????????}
????????????????}
????????????????if(flag==0&&name[0]!='#')
????????????????{
????????????????????printf("未找到此學(xué)生信息！
");
????????????????}
????????????}
????????}else
????????{
????????????printf("輸入了錯(cuò)誤的第二次選擇數(shù)字！重新輸入:
");
????????????goto?choosestation2;//返回上面第二次選擇的點(diǎn)
????????}
????}else?if(transformint(choose1)==2)
????{
????????while(transformint(room)!=0)
????????{
????????????printf("
輸入宿舍號(hào)(輸入0并回車結(jié)束):");
????????????while(scanf("%s",room)&&checknum(room)==0)
????????????{
????????????????printf("輸入錯(cuò)誤的宿舍號(hào)碼，重新輸入:
");
????????????}
????????????for(p=head;p!=NULL;p=p->next)
????????????{
????????????????if(p->room==room)
????????????????{
????????????????????printf("學(xué)號(hào):%s?姓名:%s?性別:%s?宿舍號(hào)碼:%s?電話號(hào)碼:%s
",p->num,p->name,p->sex,p->room,p->tel);
????????????????????flag=1;
????????????????????break;
????????????????}
????????????}
????????????if(flag==0&&transformint(room)!=0)
????????????{
????????????????printf("未找到此學(xué)生信息！
");
????????????}
????????}
????}else
????{
????????printf("輸入了錯(cuò)誤的第一次選擇數(shù)字！重新輸入:
");
????????goto?choosestation1;//返回最上面第一次選擇的點(diǎn)
????}
????system("cls");
????fflush(stdin);
}

void?findscore(struct?student?*head)//成績(jī)查詢
{
????system("cls");
????fflush(stdin);
????char?num[20]={'1'};//初始化用戶即將輸入的學(xué)號(hào)
????struct?student?*p;
????int?flag=0;//學(xué)號(hào)是否找到的標(biāo)志，1找到0沒(méi)找到
????p=head;
????printf("*****************************************************成績(jī)查詢***********************************************************
");
????printf("因?yàn)橛兄孛目赡?，暫時(shí)只能通過(guò)學(xué)號(hào)進(jìn)行查詢。請(qǐng)輸入學(xué)號(hào)并回車進(jìn)行查詢!
");
????printf("???????????????????????????????????????????????【退出請(qǐng)輸入'0'并回車】????????????????????????????????????????????????????
");
????while(transformint(num)!=0)
????{
????????printf("
輸入學(xué)號(hào):");
????????while(scanf("%s",num)&&checknum(num)==0)
????????{
????????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????????}
????????for(p=head;p!=NULL;p=p->next)
????????{
????????????if(transformint(p->num)==transformint(num))
????????????{
????????????????printf("學(xué)號(hào):%s 姓名:%s 語(yǔ)文：%s 數(shù)學(xué)：%s 英語(yǔ)：%s 體育：%s 專業(yè)：%s 
",p->num,p->name,p->CHN,p->MATH,p->ENG,p->PE,p->PRO);
????????????????flag=1;
????????????????break;
????????????}
????????}
????????if(flag==0)
????????{
????????????printf("學(xué)號(hào)未找到！
");
????????}
????}
????system("cls");
????fflush(stdin);
}

struct?student?*del(struct?student?*head)//刪除信息函數(shù)
{
????system("cls");
????fflush(stdin);
????char?num[20]={'1'};//用戶即將輸入的學(xué)號(hào)
????struct?student?*p1,*p2;
????printf("*****************************************************信息刪除***********************************************************
");
????if(head?==?NULL)
????{
????????system("cls");
????????fflush(stdin);
????????return(head);
????}
????printf("
***************************************輸入學(xué)號(hào)進(jìn)行刪除學(xué)生信息(輸入0結(jié)束)**********************************************
");
????do{
????????printf("
請(qǐng)輸入學(xué)號(hào):");
????????while(scanf("%s",num)&&checknum(num)==0)
????????{
????????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????????}
????????if(transformint(num)==0)
????????{
????????????break;
????????}
????????p1=p2=head;
????????while(transformint(num)!=transformint(p1->num)&&p1->next!=NULL)
????????{
????????????p2=p1;
????????????p1=p1->next;
????????}
????????if(transformint(num)==transformint(p1->num))//找到數(shù)字
????????{
????????????if(p1==head)//如果是要?jiǎng)h開(kāi)頭的節(jié)點(diǎn)，直接改變表頭指向第二個(gè)節(jié)點(diǎn)，讓第二個(gè)節(jié)點(diǎn)成為新的表頭，原來(lái)的頭用free釋放掉
????????????{
????????????????head=p1->next;
????????????????free(p1);
????????????}else//如果刪后面的節(jié)點(diǎn)，要把p2連到p1所在節(jié)點(diǎn)后面的一個(gè)節(jié)點(diǎn)，將p1所在節(jié)點(diǎn)free釋放掉
????????????{
????????????????p2->next=p1->next;
????????????????free(p1);
????????????}
????????????printf("已刪除學(xué)號(hào)為%s的信息",num);
????????????n=n-1;
????????}else
????????{
????????????printf("沒(méi)有找到學(xué)號(hào)為%s的學(xué)生
",num);
????????}
????}while(transformint(num)!=0);
????system("cls");
????fflush(stdin);
????return(head);
}

struct?student?*insert(struct?student?*head)//插入信息函數(shù)
{
????system("cls");
????fflush(stdin);
????printf("*****************************************************信息追加***********************************************************
");
????printf("????????????????????????????????????????????【加入一組信息后自動(dòng)退出】??????????????????????????????????????????????????
");
????printf("請(qǐng)按照?學(xué)號(hào)?姓名?性別?宿舍號(hào)碼?電話號(hào)碼?語(yǔ)文?數(shù)學(xué)?英語(yǔ)?體育?專業(yè)?順序輸入
");
????printf("樣例:
542013460658?李四?男?1206?10086?10?20?30?40?50
");
????int?Aver;
????struct?student?*stud=(struct?student*)malloc(LEN);//開(kāi)辟一個(gè)單元，這一塊存我們追加的信息，后面的操作把這一塊連接到鏈表的表頭
????stud->next=NULL;
????stud->next=head;
????head=stud;
????while(scanf("%s",stud->num)&&checknum(stud->num)==0)
????{
????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????}
????while(scanf("%s",stud->name)&&IncludeChinese(stud->name)==0)
????{
????????printf("輸入錯(cuò)誤的名字，重新輸入:
");
????}
????while(scanf("%s",stud->sex)&&IncludeChinese(stud->sex)==0)
????{
????????printf("輸入錯(cuò)誤的性別，重新輸入:
");
????}
????while(scanf("%s",stud->room)&&checknum(stud->room)==0)
????{
????????printf("輸入錯(cuò)誤的宿舍號(hào)碼，重新輸入:
");
????}
????while(scanf("%s",stud->tel)&&checknum(stud->tel)==0)
????{
????????printf("輸入錯(cuò)誤的電話號(hào)碼，重新輸入:
");
????}
????while(scanf("%s",stud->CHN)&&checkscore(stud->CHN)==0)
????{
????????printf("輸入錯(cuò)誤的語(yǔ)文分?jǐn)?shù)，重新輸入:
");
????}
????while(scanf("%s",stud->MATH)&&checkscore(stud->MATH)==0)
????{
????????printf("輸入錯(cuò)誤的數(shù)學(xué)分?jǐn)?shù)，重新輸入:
");
????}
????while(scanf("%s",stud->ENG)&&checkscore(stud->ENG)==0)
????{
????????printf("輸入錯(cuò)誤的英語(yǔ)分?jǐn)?shù)，重新輸入:
");
????}
????while(scanf("%s",stud->PE)&&checkscore(stud->PE)==0)
????{
????????printf("輸入錯(cuò)誤的體育分?jǐn)?shù)，重新輸入:
");
????}
????while(scanf("%s",stud->PRO)&&checkscore(stud->PRO)==0)
????{
????????printf("輸入錯(cuò)誤的專業(yè)分?jǐn)?shù)，重新輸入:
");
????}
????Aver=(transformint(stud->CHN)+transformint(stud->MATH)+transformint(stud->ENG)+transformint(stud->PE)+transformint(stud->PRO))/5;//計(jì)算平均分
????itoa(Aver,stud->average_score,10);
????n=n+1;?//節(jié)點(diǎn)+1
????system("cls");
????fflush(stdin);
????return(head);
}

void?update(struct?student?*head)//修改分?jǐn)?shù)
{
????system("cls");
????fflush(stdin);
????int?Aver;
????struct?student?*p1,*p2;
????char?num[20]={'1'};//用戶即將輸入的學(xué)號(hào)
????char?choose[20];
????printf("*****************************************************分?jǐn)?shù)修改***********************************************************
");
????if(head?==?NULL)//沒(méi)有錄信息?空表直接返回
????{
????????system("cls");
????????fflush(stdin);
????????return;
????}
????printf("
***************************************輸入學(xué)號(hào)進(jìn)行修改學(xué)生分?jǐn)?shù)(輸入0結(jié)束)**********************************************
");
????do{
????????printf("
請(qǐng)輸入學(xué)號(hào):");
????????while(scanf("%s",num)&&checknum(num)==0)
????????{
????????????printf("輸入錯(cuò)誤的學(xué)號(hào)，重新輸入:
");
????????}
????????if(transformint(num)==0)
????????{
????????????break;
????????}
????????p1=p2=head;
????????while(transformint(p1->num)!=transformint(num)&&p1->next!=NULL)//沒(méi)找到，往后走
????????{
????????????p2=p1;
????????????p1=p1->next;
????????}
????????if(transformint(p1->num)==transformint(num))//找到了，開(kāi)始選修改的科目
????????{
????????????printf("修改語(yǔ)文請(qǐng)輸入1,數(shù)學(xué)輸入2,英語(yǔ)3,體育4,專業(yè)5
");
????????????printf("請(qǐng)輸入修改科目對(duì)應(yīng)的數(shù)字:");
????????????while(scanf("%s",choose)&&checknum(choose)==0||transformint(choose)<1||transformint(choose)>5)
????????????{
????????????????printf("輸入無(wú)效的編號(hào)，重新輸入:
");
????????????}
????????????printf("請(qǐng)輸入修改后的分?jǐn)?shù):");
????????????switch(transformint(choose))
????????????{
????????????????case?1:
????????????????????while(scanf("%s",p1->CHN)&&checknum(p1->CHN)==0)
????????????????????{
????????????????????????printf("輸入錯(cuò)誤的語(yǔ)文分?jǐn)?shù)，重新輸入:
");
????????????????????}
????????????????????break;
????????????????case?2:
????????????????????while(scanf("%s",p1->MATH)&&checknum(p1->MATH)==0)
????????????????????{
????????????????????????printf("輸入錯(cuò)誤的數(shù)學(xué)分?jǐn)?shù)，重新輸入:
");
????????????????????}
????????????????????break;
????????????????case?3:
????????????????????while(scanf("%s",p1->ENG)&&checknum(p1->ENG)==0)
????????????????????{
????????????????????????printf("輸入錯(cuò)誤的英語(yǔ)分?jǐn)?shù)，重新輸入:
");
????????????????????}
????????????????????break;
????????????????case?4:
????????????????????while(scanf("%s",p1->PE)&&checknum(p1->PE)==0)
????????????????????{
????????????????????????printf("輸入錯(cuò)誤的體育分?jǐn)?shù)，重新輸入:
");
????????????????????}
????????????????????break;
????????????????case?5:
????????????????????while(scanf("%s",p1->PRO)&&checknum(p1->PRO)==0)
????????????????????{
????????????????????????printf("輸入錯(cuò)誤的專業(yè)分?jǐn)?shù)，重新輸入:
");
????????????????????}
????????????????????break;
????????????}
????????????Aver=(transformint(p1->CHN)+transformint(p1->MATH)+transformint(p1->ENG)+transformint(p1->PE)+transformint(p1->PRO))/5;
????????????itoa(Aver,p1->average_score,10);//平均分轉(zhuǎn)換字符串形式
????????}else
????????{
????????????printf("沒(méi)有找到學(xué)號(hào)為%s的學(xué)生
",num);
????????}
????}while(transformint(num)!=0);
????system("cls");
????fflush(stdin);
}

void?Oscore(struct?student*head)//排序輸出
{
????system("cls");
????fflush(stdin);
????printf("*****************************************************查看排名***********************************************************
");
????int?ranking=0;
????struct?student?*p=NULL,*p1=NULL;
????for(p=head;p!=NULL;p=p->next)
????{
????????if(checkscore(p->average_score)==0)
????????{
????????????printf("有同學(xué)只錄取了信息，沒(méi)有錄成績(jī)。所以無(wú)法公布排名
");
????????????system("pause");
????????????system("cls");
????????????fflush(stdin);
????????????return;
????????}
????}
????for(p=head;p!=NULL;p=p->next)
????{
????????for(p1=p->next;p1!=NULL;p1=p1->next)
????????{
????????????if(transformint(p->average_score)average_score))
????????????{
????????????????swap(p,p1);
????????????}
????????}
????}
????printf("學(xué)號(hào)		姓名		平均分		名次	語(yǔ)文	數(shù)學(xué)	英語(yǔ)	體育	專業(yè)	
");
????for(p=head;p!=NULL;p=p->next)
????{
????????ranking+=1;
????????printf("%s		%s		%s		%d	%s	%s	%s	%s	%s	
",p->num,p->name,p->average_score,ranking,p->CHN,p->MATH,p->ENG,p->PE,p->PRO);
????}
????printf("
");
????system("pause");
????system("cls");
????fflush(stdin);
}

void?swap(struct?student*p1,struct?student*p2)//交換數(shù)據(jù)（輔助函數(shù)）
{
????char?tempCHN[20];
????char?tempMATH[20];
????char?tempENG[20];
????char?tempPE[20];
????char?tempPRO[20];
????char?tempaverage[20];
????char?tempname[20];
????char?tempnum[20];

????strcpy(tempnum,p1->num);///
????strcpy(p1->num,p2->num);
????strcpy(p2->num,tempnum);
????strcpy(tempname,p1->name);//
????strcpy(p1->name,p2->name);
????strcpy(p2->name,tempname);
????strcpy(tempCHN,p1->CHN);///
????strcpy(p1->CHN,p2->CHN);
????strcpy(p2->CHN,tempCHN);
????strcpy(tempMATH,p1->MATH);///
????strcpy(p1->MATH,p2->MATH);
????strcpy(p2->MATH,tempMATH);
????strcpy(tempENG,p1->ENG);///
????strcpy(p1->ENG,p2->ENG);
????strcpy(p2->ENG,tempENG);
????strcpy(tempPE,p1->PE);///
????strcpy(p1->PE,p2->PE);
????strcpy(p2->PE,tempPE);
????strcpy(tempPRO,p1->PRO);///
????strcpy(p1->PRO,p2->PRO);
????strcpy(p2->PRO,tempPRO);
????strcpy(tempaverage,p1->average_score);///
????strcpy(p1->average_score,p2->average_score);
????strcpy(p2->average_score,tempaverage);
}

void?fenduan(struct?student*head)//分段輸出
{
????system("cls");
????fflush(stdin);
????printf("*****************************************************成績(jī)分段***********************************************************

");
????struct?student?*p;
????for(p=head;p!=NULL;p=p->next)
????{
????????if(checkscore(p->average_score)==0)
????????{
????????????printf("有同學(xué)只錄取了信息，沒(méi)有錄成績(jī)。所以無(wú)法公布分段
");
????????????system("pause");
????????????system("cls");
????????????fflush(stdin);
????????????return;
????????}
????}
????printf("********************************************************A***************************************************************
");
????printf("學(xué)號(hào)		姓名		平均分		語(yǔ)文	數(shù)學(xué)	英語(yǔ)	體育	專業(yè)	
");
????for(p=head;p!=NULL;p=p->next)
????{
????????if(transformint(p->average_score)>=80)
????????{
????????????printf("%s		%s		%s		%s	%s	%s	%s	%s	
",p->num,p->name,p->average_score,p->CHN,p->MATH,p->ENG,p->PE,p->PRO);
????????}
????}
????printf("********************************************************B***************************************************************
");
????printf("學(xué)號(hào)		姓名		平均分		語(yǔ)文	數(shù)學(xué)	英語(yǔ)	體育	專業(yè)	
");
????for(p=head;p!=NULL;p=p->next)
????{
????????if(transformint(p->average_score)<80&&transformint(p->average_score)>=60)
????????{
????????????printf("%s		%s		%s		%s	%s	%s	%s	%s	
",p->num,p->name,p->average_score,p->CHN,p->MATH,p->ENG,p->PE,p->PRO);
????????}
????}
????printf("********************************************************C***************************************************************
");
????printf("學(xué)號(hào)		姓名		平均分		語(yǔ)文	數(shù)學(xué)	英語(yǔ)	體育	專業(yè)	
");
????for(p=head;p!=NULL;p=p->next)
????{
????????if(transformint(p->average_score)<60)
????????{
????????????printf("%s		%s		%s		%s	%s	%s	%s	%s	
",p->num,p->name,p->average_score,p->CHN,p->MATH,p->ENG,p->PE,p->PRO);
????????}
????}
????printf("
");
????system("pause");
????system("cls");
????fflush(stdin);
}



void?save(struct?student?*head)//文件保存
{
????system("cls");
????fflush(stdin);
????FILE?*fp;
????struct?student?*p;
????fp=fopen("stu.db","wb");

????for(p=head;p!=NULL;p=p->next)
????{
????????fwrite(p,LEN,1,fp);
????}
????fclose(fp);
????printf("保存完畢
");
????system("pause");
????system("cls");
????fflush(stdin);
}

void?export1()//文件輸出
{
????system("cls");
????fflush(stdin);
????FILE?*fp;
????struct?student?*t;
????t=(struct?student?*)malloc(LEN);
????if((fp=fopen("stu.db","r"))==NULL){
????????printf("未找到文件
");
????}
????else{
????????printf("學(xué)號(hào)		姓名		平均分		語(yǔ)文	數(shù)學(xué)	英語(yǔ)	體育	專業(yè)	
");
????????int?w;
????????fseek(fp,0,2);
????????w=ftell(fp);
????????fseek(fp,0,0);
????????while(w!=ftell(fp)){
????????????fread(t,LEN,1,fp);
????????????printf("%s		%s		%s		%s	%s	%s	%s	%s	
",t->num,t->name,t->average_score,t->CHN,t->MATH,t->ENG,t->PE,t->PRO);
????????}
????????fclose(fp);
????}
????system("pause");
????system("cls");
????fflush(stdin);
}

struct?student?*import()//文件導(dǎo)入
{
????system("cls");
????fflush(stdin);
????FILE?*fp;
????if((fp=fopen("stu.db","r"))==NULL){
????????printf("未找到文件
");
????}
????else{
????????struct?student?*p1,*p2,*head;
????????p1=p2=(struct?student?*)malloc(LEN);
????????fread(p1,LEN,1,fp);
????????while(!feof(fp))?{//end?of?file
????????????n+=1;
????????????if(n==1){
????????????????head=p1;
????????????}
????????????else{
????????????????p2->next=p1;
????????????}
????????????p2=p1;
????????????p1=(struct?student?*)malloc(LEN);
????????????fread(p1,LEN,1,fp);
????????}
????????p2->next=NULL;
????????fclose(fp);
????????printf("文件導(dǎo)入成功
");
????????system("pause");
????????system("cls");
????????fflush(stdin);
????????return?head;
????}
????system("cls");
????fflush(stdin);
????return?NULL;
}

int?checknum(char?ch[])//檢查純數(shù)字的數(shù)據(jù)里是否混入了非數(shù)字的非法輸入；
{
????int?i,flag=1;
????for(i=0;i'9')
????????{
????????????flag=0;
????????????break;
????????}
????}
????return?flag;
}

int?checkscore(char?ch[])//檢查0-99分?jǐn)?shù)
{
????int?i,flag=1;
????if(strlen(ch)>=3)
????{
????????return?0;
????}
????for(i=0;i'9')
????????{
????????????flag=0;
????????????break;
????????}
????}
????return?flag;
}

int?IncludeChinese(char?*str)//是否包含中文
{
????char?c;
????while(1)
????{
????????c=*str++;
????????if?(c==0)?break;??//如果到字符串尾則說(shuō)明該字符串沒(méi)有中文字符
????????if?(c&0x80)????????//如果字符高位為1且下一字符高位也是1則有中文字符
????????????if?(*str?&?0x80)?return?1;
????}
????return?0;
}

int?transformint(char?ch[])//純數(shù)字整數(shù)(字符串轉(zhuǎn)向int類型)
{
????int?i=0,sum=0;
????for(i=0;i



	　　審核編輯：湯梓紅