学生信息管理系统C语言版

1、/交流学习/QQ:1194758555#include#include#include#include#includeintk,n;structstudentdoubleyuwen;doubleshuxue;doubleyingyu;doublezong;doublepingjun;charname20;charnum20;stu1000;voidjiazai(structstudentstu,int*num1);voidbaocun(structstudentstu,intn);voidfind(structstudentstu,intn);intfindnum(structstudents

2、tu,intn,char*num);/voidshanchu(structstudentstu,int*num1);voidshanchuyi(structstudentstu,int*num1);/voidshanchuquanbu(structstudentstu,int*num1);voidtianjiayi(structstudentstu,inti);/voidtianjia(structstudentstu,int*num1);/voidxiugai(structstudentstu,intn);/voidoutput(structstudentstu,intn,intx);/vo

3、idpaixu(structstudentstu,intn);/查找学号;删除一条记录;添加一记录；添加记录；修改一条记录；打印信息;排序；intjianchaxuehao(structstudentstu,char*num);/检查学号的合法性;intjianchachengji(doublenum);/检查成绩的合法性；voidoutputone(structstudent*stu,inti,intx);/输出一条信息voidcaidan();intmain()intq;jiazai(stu,&n);caidan();scanf(%d,&q);while(q6)(printf(-输入错误请

4、重新输入n请输入0-6的数字n);scanf(d”,&q);Sleep(300);system(cls);switch(q)(case1:tianjia(stu,&n);break;case2:xiugai(stu,n);break;case3:paixu(stu,n);break;case4:find(stu,n);break;case5:shanchu(stu,&n);break;case6:output(stu,n,0);break;case0:exit(0);return0;voidcaidan()(printf(i1n);printf(|欢迎进入学生信息管理系统1n);printf(

5、|1n);printf(I1添加学生成绩n);printf(|1n);printf(I2修改学生成绩n);printf(|1n);printf(-I3排序n);printf(printf(n);printf(printf(n);printf(printf(n);printf(printf(n);printf(printf(printf(1n);查找1n);删除11n);6输出1I1n);1110退出1I1n);111n);请输入选择:n);voidjiazai(structstudentstu,int*num1)(FILE*fp;inti;if(fp=fopen(d:student.dat,r

6、)=NULL)(*num1=0;return;for(i=0;fread(&stui,sizeof(structstudent),1,fp)!=0;i+)*num1=i;fclose(fp);voidpaixu(structstudentstu,intn)(intxuehao(constvoid*a,constvoid*b);intyuwen(constvoid*a,constvoid*b);intshuxue(constvoid*a,constvoid*b);intyingyu(constvoid*a,constvoid*b);intzongchengji(constvoid*a,const

7、void*b);int(*cmp)(constvoid*a,constvoid*b)=xuehao,yuwen,shuxue,yingyu,zongchengji;inta;printf(printf(printf(1n);欢迎进入学生信息排序页面In);1n);printf(printf(printf(printf(printf(printf(printf(printf(printf(printf(printf(printf(110:1按学号降序排序1111:11按语文成绩降序排序1112:11按数学成绩降序排序113:1按英语成绩降序排序1114:i1安总成绩降序排序请输入选择:n);n)

8、;In);n);In);n);In);n);In);n);In);n);scanf(%d,&a);Sleep(300);system(cls);qsort(stu,n,sizeof(stu0),cmpa);output(stu,n,0);intxuehao(constvoid*a,constvoid*b)if(strcmp(structreturn-1;elsereturn1;intyuwen(constvoid*a,constvoid*b)return(structstudent*)a)-yuwen1:-1;intshuxue(constvoid*a,constvoid*b)return(s

9、tructstudent*)a)-shuxue1:-1;intyingyu(constvoid*a,constvoid*b)return(structstudent*)a)-yingyu1:-1;intzongchengji(constvoid*a,constvoid*b)return(structstudent*)a)-zongzong?1:-1;student*)a)-num,(struct(struct(structnum)0)*)b)-yuwen?*)b)-shuxue?*)b)-yingyu?voidshanchuyi(structstudentstu,int*num1)(inti,

10、in,c;chary20;FILE*fp;charstr20;printf(i1n);printf(I欢迎进入学生信息删除页面In);printf(11n);printf(请输入需要删除的学号n);scanf(%s”,str);c=jianchaxuehao(stu,str);while(c=0)(printf(输入的学号不合法请重新输入n);scanf(%s”,str);c=jianchaxuehao(stu,str);Sleep(300);system(cls);printf(i1n);printf(I欢迎进入学生信息删除页面In);printf(11n);in=findnum(stu,*

11、num1,str);while(in0)(printf(该学生的信息不存在n);printf(重新输入(yes-y)返回主菜单(no-n)n);scanf(%s,y);while(strcmp(y,y)&strcmp(y,n)(printf(请输入y或nn);scanf(%s,y);if(!strcmp(y,n)(Sleep(300);system(cls);main();Sleep(300);system(cls);printf(i1n);printf(I欢迎进入学生信息删除页面n);printf(11n);printf(请输入需要删除的学号n);scanf(%s,str);in=findn

12、um(stu,*num1,str);for(i=in;i*num1-1;i+)stui=stui+1;(*num1)-;if(fp=fopen(d:student.dat,w)=NULL)printf(-打开失败n);exit(0);Sleep(300);system(cls);printf(i1n);printf(I欢迎进入学生信息删除页面In);printf(11n);printf(删除成功n);baocun(stu,*num1);printf(-继续删除(yes-y)返回上主菜单(no-n)n);getchar();scanf(%s,y);while(strcmp(y,y)&strcmp

13、(y,n)printf(请输入y或nn);getchar();scanf(%s,y);Sleep(300);system(cls);if(!strcmp(y,n)main();if(!strcmp(y,y)shanchuyi(stu,num1);voidshanchuquanbu(structstudentstu,int*num1)chary20,a20;FILE*fp;printf(i1n);printf(I欢迎进入学生信息删除页面In);printf(11n);printf(-是否全部删除？(yes-y)返回主菜单(no-n)n);scanf(%s,y);while(strcmp(y,y)

14、&strcmp(y,n)printf(请输入y或nn);scanf(%s,y);Sleep(300);system(cls);printf(i1n);printf(I欢迎进入学生信息删除页面In);printf(11n);if(!strcmp(y,y)fp=fopen(d:student.dat,w);*num1=0;printf(-删除完成n);fclose(fp);printf(返回主菜单(yes-y)结束(no-n)n);scanf(%s,a);while(strcmp(a,y)&strcmp(a,n)printf(请输入y或nn);scanf(%s,a);Sleep(300);syst

15、em(cls);if(!strcmp(a,y)main();elseSleep(300);system(cls);return;elseSleep(300);system(cls);main();voidshanchu(structstudentstu,int*num1)(intq;printf(i1n);printf(-|删除1n);printf(|1n);printf(-|1:删除指定信息1n);printf(|1n);printf(-|2:删除全部信息1n);printf(|1n);printf(11n);printf(请输入选择:n);getchar();scanf(%d,&q);sy

16、stem(cls);switch(q)(case1:shanchuyi(stu,num1);break;case2:shanchuquanbu(stu,num1);break;intfindnum(structstudentstu,intn,char*num)(inti;for(i=0;i0)(printf(i11111n1n);printf(|%-10s|%-6s|%-6s|%-6s|%-6s|%-6s|%-6s,学号姓名,语文,数学,英语,平均,总成绩n);/printf(11n);for(i=0;inum,stu-name,stu-yuwen,stu-shuxue,stu-yingyu,

17、stu-pingjun,stu-zong);elseprintf(i11111r1n);printf(|%-8s|%-6s|%-6s|%-6s|%-6s|%-6s|%-6s,学号,姓名,语文,数学,英语,平均,总成绩n);printf(-I11111P1n);printf(|%-8s|%-6s|%-6.1lf|%-6.1lf|%-6.1lf|%-6.1lfI%-6.1lf|n,stu-num,stu-name,stu-yuwen,stu-shuxue,stu-yingyu,stu-pingjun,stu-zong);printf(111111n);voidtianjiayi(structstu

18、dentstu,inti)(inta,b;printf(-请输入学生学号n);getchar();scanf(%s,stui.num);a=jianchaxuehao(stu,stui.num);while(a=0|a=2)(if(a=0)printf(输入的学号不合法请重新输入n);if(a=2)printf(输入的学号与已有的重复请重新输入n);scanf(%s,stui.num);a=jianchaxuehao(stu,stui.num);Sleep(300);system(cls);printf(in);printf(I欢迎进入学生信息添加页面n);printf(1n);printf(

19、-请输入该学生姓名n);scanf(%s,);printf(请输入语文成绩n);scanf(%lf,&stui.yuwen);b=jianchachengji(stui.yuwen);while(b=0)(printf(输入错误请重新输入n);scanf(%lf,&stui.yuwen);b=jianchachengji(stui.yuwen);printf(请输入数学成绩n);scanf(%lf,&stui.shuxue);b=jianchachengji(stui.shuxue);while(b=0)(printf(输入错误请重新输入n);scanf(%lf,&stui.

20、shuxue);b=jianchachengji(stui.shuxue);printf(请输入英语成绩n);scanf(%lf,&stui.yingyu);b=jianchachengji(stui.yingyu);while(b=0)printf(输入错误请重新输入n);scanf(%lf,&stui.yingyu);b=jianchachengji(stui.yingyu);stui.pingjun=(stui.yuwen+stui.shuxue+stui.yingyu)/3;stui.zong=stui.yuwen+stui.shuxue+stui.yingyu;voidtianjia

21、(structstudentstu,int*num1)charp10=y,y10;printf(i1n);printf(I欢迎进入学生信息添加页面In);printf(11n);while(!strcmp(p,y)tianjiayi(stu,*num1);(*num1)+=1;printf(是否继续添加(yes-y,no-n)n);getchar();scanf(%s,p);while(strcmp(p,n)&strcmp(p,y)printf(请输入y或nn);getchar();scanf(%s,p);Sleep(300);system(cls);baocun(stu,*num1);pri

22、ntf(返回主菜单(yes-y)结束(no-n)n);getchar();scanf(%s,y);while(strcmp(y,n)&strcmp(y,y)printf(请输入y或nn);getchar();scanf(%s,y);if(!strcmp(y,y)(Sleep(300);system(cls);main();elsereturn;voidxiugai(structstudentstu,intn)(intin,b,c;chara10,q10;charstr20,y10;printf(i1n);printf(I欢迎进入学生信息修改页面In);printf(11n);printf(请输

23、入要修改学生的学号n);getchar();scanf(%s,str);c=jianchaxuehao(stu,str);in=findnum(stu,n,str);while(c=0|in0)(if(in0|(in0&c=1)printf(-此条信息不存在n);if(c=0)printf(输入不合法请重新输入n);printf(重新输入(yes-y)返回主菜单(no-n)n);scanf(%s,a);while(strcmp(a,y)&strcmp(a,n)(printf(请输入y或nn);getchar();scanf(%s,a);Sleep(300);system(cls);printf

24、(-i1n);printf(I欢迎进入学生信息修改页面In);printf(11n);if(!strcmp(a,n)(Sleep(300);system(cls);main();printf(请输入要修改学生的学号n);scanf(%s,str);c=jianchaxuehao(stu,str);in=findnum(stu,n,str);printf(修改前的信息如下：n);outputone(&stuin,n,1);printf(是否修改姓?(yes-y,no-n)n);getchar();scanf(%s,y);while(strcmp(y,y)&strcmp(y,n)(printf(请

25、输入y或nn);getchar();scanf(%s,y);Sleep(300);system(cls);printf(i1n);printf(I欢迎进入学生信息修改页面In);printf(11n);if(!strcmp(y,y)(printf(请输入姓名n);scanf(%s,);printf(是否修改%s的成绩?(yes-y)返回主菜单(no-n)n,stuin.num);/getchar();scanf(%s,q);while(strcmp(q,y)&strcmp(q,n)(printf(请输入y或nn);getchar();scanf(%s,q);if(!strc

26、mp(q,y)(printf(请输入、的语文成绩n,stuin.num);scanf(%lf,&stuin.yuwen);b=jianchachengji(stuin.yuwen);while(b=0)(printf(输入错误请重新输入n);scanf(%lf,&stuin.yuwen);b=jianchachengji(stuin.yuwen);printf(请输入、的数学成绩n,stuin.num);scanf(%lf,&stuin.shuxue);b=jianchachengji(stuin.shuxue);while(b=0)(printf(输入错误请重新输入n);scanf(%lf,

27、&stuin.shuxue);b=jianchachengji(stuin.shuxue);printf(请输入、的英语成绩n,stuin.num);scanf(%lf,&stuin.yingyu);b=jianchachengji(stuin.yingyu);while(b=0)(printf(输入错误请重新输入n);scanf(%lf,&stuin.yingyu);b=jianchachengji(stuin.yingyu);if(!strcmp(q,n)(Sleep(300);system(cls);main();baocun(stu,n);printf(添加成功n返回主菜单(yes-y)结束(no-n)n);getchar();scanf(%s,y);while(strcmp(y,y)&strcmp(y,n)(printf(请输入y或nn);getchar();scanf(%s,y);if(!strcmp(y,y)(Sleep(300);system(cls);main();elsereturn