C语言编写的简单学生成绩管理系统方案

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1、C语言编写的简单学生成绩管理系统C 语言编写的简单学生成绩管理系统#include stdio.h#include stddef.h#include stdlib.h#include conio.h /*屏幕操作函数*/#include string.h#define MAX 10typedef struct studentchar nameMAX;char numMAX;char sexMAX;int age;int chinese;int mathematic;int english;float aver;struct student *next;stu;stu *head;void pr

2、int() /*输出菜单 */textcolor(RED); /*设置文本显示颜色为红色*/textbackground(GREEN); /*设置背景颜色为绿色*/window(1,1,80,10); /*制作显示菜单的窗口*/clrscr();printf( n);printf( * welcome to use student manage *n);printf( * MENU *n);printf( * Enter Record ); /*录入信息 */printf( Statistics *n); /*显示成绩 */printf( * Quest ); /*查询 */printf( U

3、pdata *n); /*修改 */printf( * Save ); /*保存到磁盘 */printf(Display *n); /*统计成绩 */.printf( * Fresh ); /*刷新 */printf(Quit *n); /*退出系统 */printf( n);void cin(stu *p1) /*录入学生信息*/ printf(Enter name:n); scanf(%s,p1-name); printf(Enter num:n); scanf(%s,p1-num); printf(Enter sex:n); scanf(%s,&p1-sex); printf(Enter

4、 age:n); scanf(%d,&p1-age); printf(Enter score:n); printf(Enter chinese:n); scanf(%d,&p1-chinese); printf(Enter math:n); scanf(%d,&p1-mathematic); printf(Enter English:n); scanf(%d,&p1-english);p1-aver=(p1-chinese+p1-mathematic+p1-english)/3.0; /*平均分 */void cindata() /*是否继续录入*/ stu *p1,*p2; int i=1;

5、 char ch;head=(stu *)malloc(sizeof(stu);p1=head; /*头指针 */while(i)cin(p1);printf(Do you Want to Continue?yes or no:);ch=getchar();.ch=getchar();if(ch=n|ch=N) i=0;p1-next=NULL;else p2=p1;p1=(stu *)malloc(sizeof(stu);p2-next=p1;void lookdata(stu *p1) /*输出所有信息*/ printf(-n);while(p1!=NULL) printf(Num:%s

6、,p1-num); printf(Name:%s ,p1-name); printf(Sex:%s ,p1-sex); printf(Age:%d ,p1-age);/* printf(n); */ printf(Chinese:%d ,p1-chinese); printf(Math:%d ,p1-mathematic); printf(English:%d ,p1-english); printf(Average:%fn,p1-aver);printf(-n);p1=p1-next;printf(-n);/* 已经完成的任务：1. 录入保存磁盘2. 按姓名学号查询3. 输出成绩表4. 修改

7、处理5. 统计学生成绩*/void find1(stu *p2) /*按姓名查找信息*/ char name20;.int b=0;printf(Enter the name of the student you want to find:);scanf(%s,name);while(p2!=NULL)if(strcmp(name,p2-name)=0)printf(The data you want has be foundn);printf(-n);printf(Num:%st,p2-num);printf( Name:%st,p2-name);printf(sex:%st,p2-sex)

8、;printf(age:%dt,p2-age);printf(n);printf(Chinese:%dt,p2-chinese);printf(Math:%dt,p2-mathematic);printf(English:%dt,p2-english);printf(Average:%fn,p2-aver);printf(*n);b=1;p2=p2-next;if(b=1)printf(Find onen);elseprintf(Not findn);void find2(stu *p2) /*按学号查找信息*/ char numMAX; int b=0;printf(Enter the nu

9、m of the student you want to find:); scanf(%s,&num);while(p2!=NULL). if(strcmp(num,p2-num)=0) printf(The data you want has be foundn);printf(-n);printf(Num:%st,p2-num);printf( Name:%st,p2-name);printf(Sex:%st,p2-sex);printf(Age:%dt,p2-age);printf(n);printf(Chinese:%dt,p2-chinese);printf(Math:%dt,p2-

10、mathematic);printf(English:%dt,p2-english);printf(Average:%fn,p2-aver);printf(*n);b=1;p2=p2-next;if(b=1)printf(Find onen);elseprintf(Not findn);void find() /*查询记录 */ int i;printf(Find with name Find with num Returnn);printf(Please Enter your choice:);scanf(%d,&i);switch(i) case 1: find1(head); break

11、; case 2: find2(head); break;.case 3:return;void update1(stu *p2) /*按姓名修改 */char name10;int b=0;printf(Enter The Name： );scanf(%s,name);while(p2!=NULL) if(strcmp(name,p2-name)=0) printf(Find you data!n);printf(Enter the new name:);scanf(%s,p2-name);printf(Enter the num:);scanf(%s,p2-num);printf(Ente

12、r the sex:);scanf(%s,p2-sex);printf(Enter the age:);scanf(%d,&p2-age);printf(Enter the chinese score:);scanf(%d,&p2-chinese);printf(Enter the math score:);scanf(%d,&p2-mathematic);printf(Enter the english score:);scanf(%d,&p2-english);p2-aver=p2-chinese+p2-mathematic+p2-english;printf(Success!n);b=1

13、;p2=p2-next;if(b=0).printf(Sorry not Find data!n);elseprintf(Finish!n);void update2(stu *p2) /*按学号修改 */char numMAX;int b=0;printf(Enter The Num： );scanf(%s,&num);while(p2!=NULL) if(strcmp(num,p2-num)=0) printf(Find you data!n); printf(Enter the new name:); scanf(%s,p2-name); printf(Enter the num:);

14、scanf(%s,p2-num); printf(Enter the sex:); scanf(%s,p2-sex); printf(Enter the age:); scanf(%d,&p2-age); printf(Enter the chinese score:); scanf(%d,&p2-chinese); printf(Enter the math score:);scanf(%d,&p2-mathematic);printf(Enter the english score:);scanf(%d,&p2-english);p2-aver=(p2-chinese+p2-mathema

15、tic+p2-english)/3.0;printf(Success!n);b=1;p2=p2-next;.if(b=0)printf(Sorry not Find data!n);elseprintf(Finish!n);void update() /*修改记录 */ int i;printf(Updata with name Updata with num Returnn);printf(Please Enter your choice:);scanf(%d,&i);switch(i) case 1:update1(head);break;case 2:update2(head);brea

16、k;case 3:return;void saved(stu *p2) /*保存到磁盘student.dat文件中 */FILE *fp;char file16=c:student.dat;char file1=num-name-sex-age-chinese-math-english-avern;if(fp=fopen(file,wt)=NULL) printf(nCannot open the file !n); return;fprintf(fp,%s,file1);while(p2!=NULL). fprintf(fp,%s-,p2-num); fprintf(fp,%s-,p2-na

17、me);fprintf(fp,%s-,p2-sex);fprintf(fp,%d-,p2-age);fprintf(fp,%d-,p2-chinese);fprintf(fp,%d-,p2-mathematic);fprintf(fp,%d-,p2-english);fprintf(fp,%fn,p2-aver);p2=p2-next;fclose(fp);printf(Saved successed!);void statistics(stu *p2) /*统计学生成绩 */ FILE *fp,*fp1;char file16=c:stufile.dat,file116=c:stugood.

18、dat;if(fp=fopen(file,wt)=NULL) printf(nCannot open the file !n); return;if(fp1=fopen(file1,wt)=NULL) printf(nCannot open the file !n); return;while(p2!=NULL) if(p2-chineseenglishmathematicnum);fprintf(fp,%s-,p2-name);fprintf(fp,%s-,p2-sex);fprintf(fp,%d-,p2-age);fprintf(fp,%d-,p2-chinese);fprintf(fp

19、,%d-,p2-mathematic);fprintf(fp,%d-,p2-english);fprintf(fp,%fn,p2-aver);.p2=p2-next;else if(p2-chinese=90)&(p2-english=90)&(p2-mathematic=90) fprintf(fp1,%s-,p2-num); fprintf(fp1,%s-,p2-name); fprintf(fp1,%s-,p2-sex); fprintf(fp1,%d-,p2-age); fprintf(fp1,%d-,p2-chinese); fprintf(fp1,%d-,p2-mathematic

20、); fprintf(fp1,%d-,p2-english);fprintf(fp1,%fn,p2-aver);p2=p2-next;elsep2=p2-next;fclose(fp);fclose(fp1);printf(Saved successed!);void print1() system(cls); /*清除整个屏幕*/void display2() /*显示不及格记录*/ FILE *fp; if(fp=fopen(c:STUFILE.DAT,r)=NULL) printf(Cannot open the file!);return;while(!feof(fp) putchar

21、(fgetc(fp);printf(bSuccess!n);.void display3() /*显示 90 分以上同学的记录*/ FILE *fp;if(fp=fopen(c:STUGOOD.DAT,r)=NULL) printf(Cannot open the file!); return;while(!feof(fp) putchar(fgetc(fp);printf(bSuccess!n);void display() /*显示记录 */ int i;printf(Display All Display Good Display Flunkn);printf(Plasce Enter

22、your choice:);scanf(%d,&i);switch(i) case 1: lookdata(head); break;case 2: display3(); break; case 3: display2(); break;void interface() /*启动界面 */clrscr();window(20, 5, 60, 15);.textattr(BLUE+(LIGHTGRAY4);clrscr();cputs(nn Welcome to use student manage system! );cputs( Maker: zhangwantong );cputs( C

23、lass: 04-5 );cputs( Edit : V1.0 );cputs( Press ENTER key .);while(getchar()!=n) ;return;void interface2() /*退出界面 */print1();window(20, 5, 60, 15);textattr(128+BLUE+(LIGHTGRAY4);clrscr();cputs(nn & Thanks for you used! & n);cputs( Maker: zhangwantong );cputs( Class: 04-5 );cputs( Edit : V1.0 );cputs(

24、 Press ENTER key .);while(getchar()!=n) ;return;void main() int choice; int i;stu *p2; interface(); print1();.print();while(1)printf(Enter your choice:);scanf(%d,&i);while(i8) printf(Enter num from 1 to 8:n); printf(Enter your choice:); scanf(%d,&i);switch(i) case 1: cindata(); break; case 2: statistics(head); break;case 3:find();break;case 4:update();break;case 5:saved(head);break;case 6:display();break;case 7:print1();print();break;case 8:interface2();.exit(1);break; printf(Input ENTER to continue:);getchar();while(getchar()!=n) ;system(cls);print();.