C语言编写的简单学生成绩管理系统方案

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"#defineMAX10typedefstructstudentcharnameMAX;charnumMAX;charsexMAX;intage;intchinese;intmathematic;intenglish;floataver;s

2、tructstudent*next;stu;stu*head;voidprint()/*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("*welcometousestudentmanage*5)printf("*MENU*5)printf("*<1>EnterRecord");/*录入信息*/printf(&qu

3、ot;<2>Statistics*n");/*显示成绩*/printf("*<3>Quest");/*查询*/printf("<4>Updata*n");/*修改*/printf("*<5>Save");/*保存到磁盘*/printf("<6>Display*n");/*统计成绩*/printf("*<7>Fresh");/*刷新*/printf("<8>Quit*n");/*退出系

4、统*/printf("$Maker:zhangwantongClass:045Date:2007.01.12$n");printf("n");voidcin(stu*p1)/*录入学生信息*/printf("Entername:n");scanf("%s",p1->name);printf("Enternum:n");scanf("%s",p1->num);printf("Entersex:n");scanf("%s",&a

5、mp;p1->sex);printf("Enterage:n");scanf("%d”,&p1->age);printf("Enterscore:n");printf("Enterchinese:n");scanf("%d",&p1->chinese);printf("Entermath:n");scanf("%d",&p1->mathematic);printf("EnterEnglish:n")

6、;scanf("%d”,&p1->english);p1->aver=(p1->chinese+p1->mathematic+p1->english)/3.0;/*平均分*/voidcindata()/*是否继续录入*/stu*p1,*p2;inti=1;charch;head=(stu*)malloc(sizeof(stu);p1=head;/*头指针*/while(i)cin(p1);printf("DoyouWanttoContinue?yesorno:");ch=getchar();ch=getchar();if(ch

7、='n'|ch='N')(i=0;p1->next=NULL;)else(p2=p1;p1=(stu*)malloc(sizeof(stu);p2->next=p1;)voidlookdata(stu*p1)/*输出所有信息*/(printf("n");while(p1!=NULL)(printf("Num:%s",p1->num);printf("Name:%s",p1->name);printf("Sex:%s",p1->sex);printf(&q

8、uot;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

9、任务：1.录入保存磁盘2.按姓名学号查询3.输出成绩表4.修改处理5.统计学生成绩*/voidfind1(stu*p2)/*按姓名查找信息*/(charname20;intb=0;printf("Enterthenameofthestudentyouwanttofind:");scanf("%s",name);while(p2!=NULL)if(strcmp(name,p2->name)=0)printf("Thedatayouwanthasbefoundn");printf("n");printf(&quo

10、t;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->mathematic);printf("English:%dt",p2->

11、;english);printf("Average:%fn",p2->aver);printf("*n");b=1;p2=p2->next;if(b=1)printf("Findonen");elseprintf("Notfindn");voidfind2(stu*p2)/*按学号查找信息*/charnumMAX;intb=0;printf("Enterthenumofthestudentyouwanttofind:");scanf("%s",&num);

12、(if(strcmp(num,p2->num)=0)(printf("Thedatayouwanthasbefoundn");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:%

13、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("Findonen");elseprintf("Notfindn");voidfind()/*查询记录*/(inti;printf(

14、"<1>Findwithname<2>Findwithnum<3>Returnn");printf("PleaseEnteryourchoice:");scanf("%d”,&i);switch(i)(case1:find1(head);break;case2:find2(head);break;case3:return;)voidupdate1(stu*p2)/*按姓名修改*/(charname10;intb=0;printf("EnterTheName:");scanf(&qu

15、ot;%s”,name);while(p2!=NULL)(if(strcmp(name,p2->name)=0)(printf("Findyoudata!n");printf("Enterthenewname:");scanf("%s",p2->name);printf("Enterthenum:");scanf("%s",p2->num);printf("Enterthesex:");scanf("%s”,p2->sex);printf(&

16、quot;Entertheage:");scanf("%d”,&p2->age);printf("Enterthechinesescore:");scanf("%d",&p2->chinese);printf("Enterthemathscore:");scanf("%d",&p2->mathematic);printf("Entertheenglishscore:");scanf("%d",&p2->

17、;english);p2->aver=p2->chinese+p2->mathematic+p2->english;printf("Success!n");b=1;)p2=p2->next;)if(b=0)printf("SorrynotFinddata!n");elseprintf("Finish!n");)voidupdate2(stu*p2)/*按学号修改*/charnumMAX;intb=0;printf("EnterTheNum:");scanf("%s"

18、,&num);while(p2!=NULL)if(strcmp(num,p2->num)=0)printf("Findyoudata!n");printf("Enterthenewname:");scanf("%s",p2->name);printf("Enterthenum:");scanf("%s",p2->num);printf("Enterthesex:");scanf("%s",p2->sex);printf(&q

19、uot;Entertheage:");scanf("%d",&p2->age);printf("Enterthechinesescore:");scanf("%d",&p2->chinese);printf("Enterthemathscore:");scanf("%d",&p2->mathematic);printf("Entertheenglishscore:");scanf("%d",&p2

20、->english);p2->aver=(p2->chinese+p2->mathematic+p2->english)/3.0;printf("Success!n");b=1;)p2=p2->next;)if(b=0)printf("SorrynotFinddata!n");elseprintf("Finish!n");)voidupdate()/*修改记录*/inti;printf("<1>Updatawithname<2>Updatawithnum<3&

21、gt;Returnn");printf("PleaseEnteryourchoice:");scanf("%d”,&i);switch(i)case1:update1(head);break;case2:update2(head);break;case3:return;)voidsaved(stu*p2)/*保存到磁盘student.dat文件中*/FILE*fp;charfile16="c:student.dat"charfile1="num-name-sex-age-chinese-math-english-av

22、ern"if(fp=fopen(file,"wt")=NULL)printf("nCannotopenthefile<student>!n");return;)fprintf(fp,"%s",file1);(fprintf(fp,"%s-",p2->num);fprintf(fp,"%s-",p2->name);fprintf(fp,"%s-",p2->sex);fprintf(fp,"%d-",p2->age

23、);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("Savedsuccessed!");voidstatistics(stu*p2)/*统计学生成绩*/(FILE*fp,*fp1;charfile16="c:stuf

24、ile.dat",file116="c:stugood.dat"if(fp=fopen(file,"wt")=NULL)(printf("nCannotopenthefile<stufile>!n");return;if(fp1=fopen(file1,"wt")=NULL)(printf("nCannotopenthefile<stugood>!n");return;while(p2!=NULL)(if(p2->chinese<60)|(p2-&g

25、t;english<60)|(p2->mathematic<60)(fprintf(fp,"%s-",p2->num);fprintf(fp,"%s-",p2->name);fprintf(fp,"%s-",p2->sex);fprintf(fp,"%d-",p2->age);fprintf(fp,"%d-",p2->chinese);fprintf(fp,"%d-",p2->mathematic);fprintf(fp,

26、"%d-",p2->english);fprintf(fp,"%fn",p2->aver);p2=p2->next;)elseif(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

27、(fp1,"%d-”,p2->age);fprintf(fp1,"%d-”,p2->chinese);fprintf(fp1,"%d-”,p2->mathematic);fprintf(fp1,"%d-”,p2->english);fprintf(fp1,"%fn”,p2->aver);p2=p2->next;)elsep2=p2->next;)fclose(fp);fclose(fp1);printf("Savedsuccessed!");)voidprint1()system(&

28、quot;cls");/*清除整个屏幕*/voiddisplay2()/*显示不及格记录*/FILE*fp;if(fp=fopen("c:STUFILE.DAT”,"r")=NULL)printf("Cannotopenthefile!");return;while(!feof(fp)putchar(fgetc(fp);printf("bSuccess!n");voiddisplay3()/*显示90分以上同学的记录*/(FILE*fp;if(fp=fopen("c:STUGOOD.DAT”,"

29、r")=NULL)(printf("Cannotopenthefile!");return;while(!feof(fp)(putchar(fgetc(fp);printf("bSuccess!n");voiddisplay()/*显示记录*/(inti;printf("<1>DisplayAll<2>DisplayGood<3>DisplayFlunkn");printf("PlasceEnteryourchoice:");scanf("%d",&

30、amp;i);switch(i)(case1:lookdata(head);break;case2:display3();break;case3:display2();break;voidinterface()/*启动界面*/(clrscr();window(20,5,60,15);textattr(BLUE+(LIGHTGRAY<<4);clrscr();cputs("nnWelcometousestudentmanagesystem!");cputs("Maker:zhangwantong");cputs("Class:04-5");cputs("Date:2007.01.13");cputs("Edit:V1.0&qu