c语言教务管理系统

#include"stdio.h"#include"stdlib.h"#include"conio.h"#include"string.h"#include"windows.h"//登陆界面函数voidload();voidbackground1();voidchoice1();voidfanhui1();voiddenglu();voidzhuce();intchazhao();//目录界面函数voidmulu();voidbackground();voidchoice();voidadd();voidxiugai();voidshanchu();voiddel();voidchaxun();voidpaixu();voidtongji();voidoutput();voidfinish();voidfanhui2();voidshuchu();intzongren();intchr();intenr();intmar();voidback();floatchinese();floatenglish();floatmath();floatzongmax();//登陆界面结构体structself{chara[10];charb[10];ntflg}s[100]={{"admin","admin",1},{"1","1",1}};//目录界面结构体structstudent{charnum[10];charname[10];floatfloatfloatfloatchinese;english;math;}stu[5]={{"1100","小明",12,18,20,50,1},{"1101","小样",20,80,60,160,1}};//登陆界面voidmain(){ad}voidload(){background1();choice1();}voidbackground1(){puts("");puts("");printf("********************************************\n");printf("欢迎登录学生管理系统puts("");printf("********************************************\n");printf("1.登录2.注册\n");printf请选择:");}voidchoice1(){scanf("%d",&a);fflush(stdin);switch(a){case1:denglu();break;case2:zhuce();break;default:fanhui1();break;}}voidfanhui1(){printf("printf("system("cls");d}voiddenglu(){structselfs2;charc;输入错误!\n");请重新输入!\n");inti=0;intj=0;printf("请输入用户名:\n");scanf("%s",s2.a);fflush(stdin);puts("");printf("请输入密码:");c=getch();while(c!=13){printf("*");s2.b[i]=c;while((c=getch())==8){ifi0)continue;putchar('\b');putchar('');putchar('\b');s2.b[--i]=0;}}s2.b[i]=0;s2.flg=1;puts("");puts(s2.b);for(i=0;i<100;i++){if(!strcmp(s[i].a,s2.a)&&!strcmp(s[i].b,s2.b)){printf("成功!");system("cls");printf("\n\n\n\n\n\n\n\n\n\t\t\t欢迎进入学生管理系统\n\n\n");Sleep(2000);system("cls");mulu();}{}}if(j==100){fanhui1();}}voidzhuce(){structselfs3;charc,d;inti,j;printf("请输入帐号:");gets(s3.a);puts(s3.a);printf("请输入密码:");c=getch();while(c!=13){printf("*");s3.b[i]=c;while((c=getch())==8){ifi0)continue;putchar('\b');putchar('');putchar('\b');s3.b[--i]=0;}}s3.b[i]=0;s3.flg=1;printf("确定'y'scanf("%c",&d);取消'n'");fflush(stdin);{j=chazhao();s[j]=s3;printf("注册成功!");shuchu();system("cls");fanhui1();}{fanhui1();}}intchazhao(){aifor(i=0;i<100;i++){if(s[i].flg==0){a=i;break;}}returni;}//目录界面voidmulu(){background();choice();}voidbackground(){printf("*****************************************\n");printf("/////////////////////^_^\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n");printf("******************************************\n");puts("");printf("欢迎进入学生成绩管理系统");puts("");printf("****************************************\n");printf("请输入业务:\n");puts("");printf("1.查看所有记录显示\n");printf("2.添加学生成绩\n");printf("3.修改学生成绩\n");printf("4.删除学生成绩\n");printf("5.清空记录\n");printf("6.按要求查询学生成绩\n");printf("7.按要求排序\n");printf("8.按要求统计成绩\n");printf("9.退出\n");printf("请选择:");}voidchoice(){scanf("%d",&a);fflush(stdin);printf("%d\n",a);switch(a){case1:output();break;case2:add();break;case3:xiugai();break;case4:shanchu();break;case5:del();break;case6:chaxun();break;case7:paixu();break;case8:tongji();break;case9:finish();break;default:system("cls");mulu();break;}}voidadd(){system("cls");inti;charc,a;shuchu();printf("1输入2返回主界面\n");scanf("%d",&a);fflush(stdin);ifa){for(i=0;i<5;i++){if(stu[i].a==0)break;}printf("请输入学号:");scanf("%s",stu[i].num);fflush(stdin);printf("\n请输入姓名:");scanf("%s",stu[i].name);fflush(stdin);printf("\n请输入语文成绩:");scanf("%f",&stu[i].chinese);fflush(stdin);printf("\n请输入英语成绩:");scanf("%f",&stu[i].english);fflush(stdin);printf("\n请输入数学成绩:");scanf("%f",&stu[i].math);fflush(stdin);stu[i].a=1;stu[i].sum=stu[i].chinese+stu[i].english+stu[i].math;shuchu();printf("y返回主界面");scanf("%c",&c);{system("cls");mulu();}{add();}}elseif(a==2){system("cls");mulu();}{printf("输入错误，请重新输入!");system("cls");add();}}voidxiugai(){chara;system("cls");shuchu();printf("1修改2返回主界面");scanf("%d",&a);fflush(stdin);ifa){charb[10];charc;inti;intj;printf("请输入需要修改的人的姓名或者学号:");gets(b);fflush(stdin);puts("");puts(b);for(i=0;i<5;i++){{printf("\n请输入需要修改的学号:");scanf("%s",stu[i].num);fflush(stdin);printf("\n请输入需要修改的姓名:");scanf("%s",stu[i].name);fflush(stdin);printf("\n请输入需要修改的语文成绩:");scanf("%f",&stu[i].chinese);fflush(stdin);printf("\n请输入需要修改的英语成绩:");scanf("%f",&stu[i].english);fflush(stdin);printf("\n请输入需要修改的数学成绩成绩:");scanf("%f",&stu[i].math);fflush(stdin);stu[i].sum=stu[i].chinese+stu[i].english+stu[i].math;break;}{}}ifj5){printf("输入错误，请重新输入!");system("cls");xiugai();}system("cls");shuchu();printf("y返回主界面");scanf("%c",&c);{system("cls");mulu();}{xiugai();}}elseif(a==2){system("cls");mulu();}{printf("输入错误，请重新输入!");system("cls");xiugai();}}voidshanchu(){chara;intj0;charc;system("cls");shuchu();scanf("%d",&a);fflush(stdin);ifa){inti;charb[10];printf("请输入需要删除的人的学号或者姓名:");gets(b);fflush(stdin);for(i=0;i<5;i++){{stu[i].a=0;{printf("删除成功!");break;}e{}}if(j==5){printf("输入错误，请重新输入!");shanchu();}printf("是否返回主界面:(y是)");scanf("%c",&c);{system("cls");mulu();}shanchu();}}elseif(a==2){system("cls");mulu();}{shanchu();}}voiddel(){chara;system("cls");shuchu();printf("1清空2返回主界面");scanf("%d",&a);fflush(stdin);ifa){charc;scanf("%c",&c);fflush(stdin);{inti;for(i=0;i<5;i++){stu[i].a=0;}system("cls");del();}{del();}}elseif(a==2){system("cls");mulu();}{printf("输入错误,请重新输入!");del();}}voidchaxun(){chara;intj=0;system("cls");printf("1查询2返回主界面");printf("请选择;");scanf("%d",&a);fflush(stdin);ifa){charb[10];charc;inti;printf("请输入需要查询的人的学号或者姓名:");gets(b);for(i=0;i<5;i++){{printf("\n学号:%-6s",stu[i].num);printf("\n姓名:%-6s",stu[i].name);printf("\n语文成绩:%-6.2f",stu[i].chinese);printf("\n英语成绩:%-6.2f",stu[i].english);printf("\n数学成绩:%-6.2f",stu[i].math);printf("\n总成绩:%-6.2f",stu[i].sum);break;}{}}ifj=5){printf("输入错误,请重新输入!");chaxun();}scanf("%c",&c);fflush(stdin);{system("cls");mulu();}{printf("继续查找!");chaxun();}}elseif(a==2){system("cls");mulu();}{printf("输入错误,请重新输入!");chaxun();}}voidpaixu(){chara;charc;system("cls");shuchu();printf("1排序2返回主界面");scanf("%d",&a);fflush(stdin);ifa){inti,j;structstudents;printf("1降序排列2升序排列");printf("请选择:");scanf("%d",&aa);fflush(stdin);for(i=0;i<5;i++){for(j=0;j<4;j++){if(aa==1){if(strcmp(stu[j].num,stu[j+1].num)<0){s=stu[j];stu[j]=stu[j+1];stu[j+1]=s;}}if(aa==2){if(strcmp(stu[j].num,stu[j+1].num)>0){s=stu[j];stu[j]=stu[j+1];stu[j+1]=s;}}}}if(aa!=1&&aa!=2){printf("输入错误，请重新输入!");system("cls");paixu();}shuchu();printf("是否返回主界面:(y是)");scanf("%c",&c);fflush(stdin);{system("cls");mulu();}{printf("继续!");paixu();}}elseif(a==2){system("cls");mulu();}{printf("输入错误，请重新输入!");paixu();}}voidtongji(){system("cls");chara;printf("1统计2返回主界面");scanf("%d",&a);fflush(stdin);ifa{charc;printf("请输入统计条件:\n");printf("printf("printf("printf("printf("printf("printf("printf("printf("printf("printf("printf("请选择:");scanf("%d",&c);fflush(stdin);if(c==1){ntjj=zongren();1.参加考试的学生人数\n");2.语文最高分\n");4.语文及格率\n");5.英语最高分\n");6.英语及格的人数\n");7.英语及格率\n");8.数学最高分\n");9.数学及格人数\n");10.数学及格率\n");11.总成绩最高\n");back();}elseif(c==2){floata;a=chinese();printf("语文最高分为:%.2f",a);back();}elseif(c==3){a=chr();printf("语文及格的人数为:%d",a);back();}elseif(c==4){ntaba=zongren();b=chr();printf("语文的及格率为:%d",b/a);back();}elseif(c==5){floata;a=english();printf("英语的最高分为%.2f:",a);back();}elseif(c==6){a=enr();printf("英语及格的人数为:%d",a);back();}elseif(c==7){ntaba=zongren();b=enr();printf("英语的及格率为:%.2f",b/a);back();}elseif(c==8){floata;a=math();printf("数学的最高分为%.2f:",a);back();}elseif(c==9){a=mar();printf("数学及格的人数为:%d",a);back();}elseif(c==10){taba=zongren();b=enr();printf("数学的及格率为:%.2f",b/a);back();}elseif(c==11){floata;a=zongmax();printf("总分最高为:.2f",a);back();}{printf("输入错误，请重新输入!");system("cls");tongji();}}elseif(a==2){system("cls");mulu();}{printf("输入错误，请重新输入!");tongji();}}intzongren(){inti,a=0;for(i=0;i<5;i++){if(stu[i].a==1){a++;}}returna;}floatchinese(){floatmax;inti;max=stu[0].chinese;for(i=0;i<5;i++){if(stu[i].a==1){if(max<stu[i].chinese){max=stu[i].chinese;}}}returnmax;}floatenglish(){floatmax;inti;max=stu[0].english;for(i=0;i<5;i++){if(stu[i].a==1){if(max<stu[i].english){max=stu[i].english;}}}returnmax;}floatmath(){floatmax;inti;max=stu[0].math;for(i=0;i<5;i++){if(stu[i].a==1){if(max<stu[i].math){max=stu[i].math;}}}returnmax;}floatzongmax(){floatmax;inti;for(i=0;i<5;i++){if(stu[i].a==1){if(max<stu[i].sum){max=stu[i].sum;}}}returnmax;}intchr(){inti,a=