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1、这个管理系统还有一些东西可以等大家完善，并且简单易懂。 #include #include #inelude #inelude vconio.h#include #inelude #inelude /typedef struct stude ntint num;char name10;char sex6;float china;float muth;float english;float sum;float average;struct student *next;stu;/void Chakanmenu();void passwordCheck();/密码系统struct student*
2、startCheckf);开始void gotoxy(int x, int y);/x 为列坐标,y 为行坐标void menu();/主菜单struct student* insert();/创建链表，并输入数据struct student* Charu(stu* head);向链表中插入数据struct student* Delete(stu* head);/删除链表中数据struct student* Xuigai(stu* head);/修改链表中数据 struct student* readfile();将文件中信息读取到链表中 void savelist(stu *phead);/
3、将处理后的链表保存到文件 void savefstu* phead);/将链表中数据保存到文件中 /void jiaohuan(stu *p,stu *q)int n;float c,rrbe,s，a;char name10,sex6;n 二 qnum;qnu m=p-num; p-num二n;c=q-chi na;q chi na 二 p-chi na; p-chi na 二 c;m=p-muth; p-muth=q-muth;q-muth=m; e=q-e nglish; q-english=p-e nglish; p-e nglish=e;s=q-sum; q-sum=p-sum; p-
4、sum=s;a=q-average; q-average=p-average;p-average=a;strcpy(n ame);strcpy(q-n ame,p-n ame); strcpy(p- name, name); strcpy(sex,q-sex); strcpy(q-sex,p-sex);strcpy(p-sex,sex);/struct student* Xuepaixu(stu *head)int count=l,i,j;stu *p,*q;p=q=head;while(p-next!=NULL)coun t+;p=p-n ext; for(i=l;ico un t;i+)f
5、or(j=0;jnumnext-num) jiaohua n(q,q-next); q 二 qn ext;q=head;return (head);/struct student* Zongpaixu(stu *head)int count=l,i,j;stu *p,*q;p=q=head;while(p-next!二NULL)coun t+;p=p-n ext;for(i=l;ico un t;i+)for(j=0;jsum ne xt-sum)jiaohua n(q ,q-next);q二qn ext;q=head;return (head);/struct student* Pingpa
6、ixu(stu *head)int count=l,i,j;stu *p,*q;p=q=head;while(p-next!=NULL)coun t+;p=p-n ext;for(i=l;icount;i+)for(j=0;javeragenext-average) jiaohua n(q ,q-next);q二qnext;q=head;return (head);/void savelistfstu *phead)FILE *fp;fp=fopen(data.datJ,w);while(phead!=NULL)fprintf(fp,“n“)；fprintf(fp,%d %s %s %.2f
7、%.2f %.2f %.2f %.2f,phead-num,phead-name,phead-sex,phead-ch in azphead muth,phead-english,phead-sum,phead-average);phead=phead-next;fclose(fp);/struct student* readfilef)stu *phead=NULL,*p;FILE* fp;if(fp=fopen(,data.dat,/,rb)=NULL)fclose(fp);return (phead);elsep=(struct student*)malloc(sizeof(struct
8、 student);fscanf(fp,”d %s %s %f %f %f %f %f,&p-num,p-narne,p-sex,&p-china,&p-muth,&p-englis h,&p-sum,&p-average);phead=p;while(fgetc(fp)!=EOF)p-next=(struct student*)malloc(sizeof(struct student);p=p next;fscanfffp/d %s %s %f %f %f %f %化&p-num,p-name,p-sex,&p-china,&p-muth,&penglis h,&p-sum,&paverag
9、e);讦(0(p-muth)| | (p-muth)100)break;pn ext=NULL;fclose(fp);return (phead);/void Shuchu(stu* head)systemCCLS);if(head=NULL)printf(ttt你还没有录入学生信息，即将返回主菜单“)；Sleep(2000);menu();elseint i,count=0;printf(nn i111111r1 n)；printfCAn |学号|姓名|性别|语文|数学|英语|平均分|总 分 I nn);while(head!=NULL)printfC | %-5d | %-6s |%2s
10、| %5.1f | %5.1f | %5.1f | %5.1f | %5.1fIn ,head-num,head-n ame,head-sex,head-chi na,head-muth,head-e nglish，head-average,h ead-sum);head=head n ext;coun t+;printfC 111111111 n);printfC在线人数：dn“,count);printfC返回主菜单按任意键”);scanfcr：&i);；/void passwordCheck()char password20, inputword20;jnt i = 0, j = 0;c
11、har c = 0;FILE *fp = fopenCpassword.dat蔦 HrbH)；systemCtitle学生成绩统讣系统密码输入“);/将标题栏命名为“学生成绩统讣系统” fread(password, 20,1, fp);for (i = 0; i 3; i+)j = 0;printf(Hnnntt你还有d次机会输入正确密码:“,3-i);printf(nnnnttt i1 nH);printf(ttt II n)；printf(Httt 11 n);gotoxy(26, 8);while (c = getch() != 13 & j 0)putchar(b);putchar(
12、);putchar(b);j-；elseif (isprint(c)/isprint为检测C是否为可打印的函数putchar(*);in putwordj = c;j卄；inputwordj = 0;if (strcmp(inputword, password) = 0)return;elsesystem(,CLS,); printf(ttt密码输入错误“);if (3 =i)systemCLS”)；printf(nnntt你已浪费所有机会！程序即将退出！ “);Sleep(2000);exit(O);fclose(fp);systemCCLS);/struct student *startC
13、heck(void)FILE *fpl;char password20 = 666666;int i;if (fpl = fopen(password.datz rb) = NULL)/若密码文件不存在，新建密码文件 fpl = fopenfpassword.dat, wb)；fwrite(password, 20,1, fpl);fclose(fpl);printf(”密码初始化完成！(默认密码为:666666)；passwordCheck();elsepasswordCheck();读条system(CLS);systemCtitle学生成绩统计系统载入中“);将标题栏命名为“学生成绩统计系统” printf(Hnnttt欢迎进入本系统！正在载入.”)；1 nH);I nM)；J n)
