300行c++代码编程实例？

# include # include # include void select()；/*自定义函数*/ void input()的全局声明；void输出()；void sort()；void search()；void modify()；void deleted()；void save()；空载荷()；struct student { int numberchar name[9]；迷人的性爱；char xy[20]；char zy[20]；int类；双jcj双pcj双zcj};构造学生a[40]；void main(){ select()；//调用选择函数} void select(){ int n；系统(“cls”)；printf(" |-| \ n ")；Printf("|主菜单| \ n ")；Printf("| 1。输入函数| \ n ")；Printf("| 2。输出函数| \ n ")；Printf("| 3。排序函数| \ n ")；Printf("| 4。查询函数| \ n ")；Printf("| 5。修改函数| \ n ")；Printf("| 6。delete function | \ n ")；Printf("| 7。保存函数| \ n ")；Printf("| 8。LOAD function | \ n ")；Printf("| 9。退出程序| \ n ")；printf(" |-| \ n ")；Printf("请选择一个函数:")；scanf("%d "，& ampn)；开关(n){ case 1:input()；select()；打破；/*调用输入函数后，返回主菜单中的函数选择函数*/例2:output()；select()；打破；案例三:sort()；select()；打破；案例四:搜索()；select()；打破；情况五:modify()；select()；打破；情况6:删除()；select()；打破；案例7:save()；select()；打破；情况8:load()；select()；打破；案例9:出口(0)；打破；} getchar()；getchar()；系统(“暂停”)；} void input() { int i，n；系统(“cls”)；Printf("欢迎使用输入函数\ n \ n \ n ")；for(I = 0；我& lt=39;i++){ printf("-| \ n ")；Printf("|是否要输入1学生的信息| \ n ")；Printf("| 1。enter | \ n ")；Printf("| 2。end input | \ n ")；printf("-| \ n ")；Printf("请输入您的选择:")；scanf("%d "，& ampn)；if(n = = 2)break；Printf("学号:")；scanf("%d "，& amp甲[我]。号)；getchar()；printf(" name:")；获取(a[i])。姓名)；Printf("性别:")；甲[我]。sex = getchar()；getchar()；Printf("学院:")；获取(a[i])。xy)；Printf("专业:")；获取(a[i])。zy)；printf(" class:")；scanf("%d "，& amp甲[我]。类)；Printf("纸张等级:")；scanf("%lf "，& amp甲[我]。jcj)；Printf("平时成绩:")；scanf("%lf "，& amp甲[我]。pcj)；} getchar()；getchar()；系统(“暂停”)；} void output(){ int I；系统(“cls”)；Printf("欢迎使用输出函数\ n \ n \ n ")；Printf("%-9s "，"学号")；Printf("%-9s "，"名称")；Printf("%-5s "，"性别")；Printf("%-20s "，"学院")；Printf("%-20s "，"专业")；Printf("%-5s "，" class ")；Printf("%-9s "，"论文成绩")；Printf("%-9s "，"平时成绩")；Printf("%-9s "，"总分")；printf(" \ n ")；for(I = 0；我& lt=39;i++) { a[i]。zcj=a[i]。jcj*0.6+a[i]。pcj如果(a[i]。number = = 0)break；printf("%-9d "，a[i].号)；printf("%-9s "，a[i]。姓名)；printf("%-5c "，a[i].性)；printf("%-20s "，a[i].xy)；printf("%-20s "，a[i].zy)；printf("%-5d "，a[i].类)；printf("%-9.2lf "，a[i].jcj)；printf("%-9.2lf "，a[i].pcj)；printf("%-9.2lf "，a[i].zcj)；printf(" \ n ")；} getchar()；getchar()；系统(“暂停”)；} void sort() { int i，j，n；结构学生t；系统(“cls”)；Printf("欢迎使用排序函数\ n \ n \ n ")；printf("-| \ n ")；Printf("|排序菜单| \ n ")；Printf("| 1。根据总分从高到低对输出进行排序| \ n ")；Printf("| 2。总分降序输出| \ n ")；Printf("| 3。退出排序函数| \ n ")；printf("-| \ n ")；Printf("请输入您的选择:")；scanf("%d "，& ampn)；开关(n){ case 1:for(j = 38；j & gt=0;j-){ for(I = 0；我& lt= j；i++) { if(a[i]。number == 0 || a[i+1]。number = = 0)break；else { if(a[i].zcj & lta[i+1]。zcj){ t = a[I]；a[I]= a[I+1]；a[I+1]= t；} } } }破；情况2:for(j = 38；j & gt=0;j-){ for(I = 0；我& lt= j；i++) { if(a[i]。number == 0 || a[i+1]。number = = 0)break；else { if(a[i].zcj & gta[i+1]。zcj){ t = a[I]；a[I]= a[I+1]；a[I+1]= t；} } } }破；案例三:select()；打破；} printf("%-9s "，"学号")；Printf("%-9s "，"名称")；Printf("%-5s "，"性别")；Printf("%-20s "，"学院")；Printf("%-20s "，"专业")；Printf("%-5s "，" class ")；Printf("%-9s "，"论文成绩")；Printf("%-9s "，"平时成绩")；Printf("%-9s "，"总分")；printf(" \ n ")；for(I = 0；我& lt=39;i++) { a[i]。zcj=a[i]。jcj*0.6+a[i]。pcj如果(a[i]。number = = 0)break；printf("%-9d "，a[i].号)；printf("%-9s "，a[i]。姓名)；printf("%-5c "，a[i].性)；printf("%-20s "，a[i].xy)；printf("%-20s "，a[i].zy)；printf("%-5d "，a[i].类)；printf("%-9.2lf "，a[i].jcj)；printf("%-9.2lf "，a[i].pcj)；printf("%-9.2lf "，a[i].zcj)；printf(" \ n ")；} getchar()；getchar()；系统(“暂停”)；} void search() { int i，n；char search _ name[9]；系统(“cls”)；Printf("欢迎使用查询函数\ n \ n \ n ")；printf("-| \ n ")；Printf("|查询菜单| \ n ")；Printf("| 1。按姓名查询| \ n ")；Printf("| 2。按性别查询| \ n ")；Printf("| 3。按学号查询| \ n ")；Printf("| 4。按专业查询| \ n ")；Printf("| 5。按学院查询| \ n ")；Printf("| 6。根据总分查询通过考试的同学| \ n ")；Printf("| 7。退出查询功能| \ n ")；printf("-| \ n ")；Printf("请输入您的选择:")；scanf("%d "，& ampn)；getchar()；switch(n){ case 1:printf(" \ n \ n \ n请输入要查询的同学姓名:")；获取(search _ name)；Printf("%-9s "，"学号")；Printf("%-9s "，"名称")；Printf("%-5s "，"性别")；Printf("%-20s "，"学院")；Printf("%-20s "，"专业")；Printf("%-5s "，" class ")；Printf("%-9s "，"论文成绩")；Printf("%-9s "，"平时成绩")；Printf("%-9s "，"总分")；printf(" \ n ")；for(I = 0；我& lt=39;i++) { if(a[i]。number = = 0)break；else { if(strcmp(a[i])。name，search_name) == 0) { printf("%-9d "，a[i]。号)；printf("%-9s "，a[i]。姓名)；printf("%-5c "，a[i].性)；printf("%-20s "，a[i].xy)；printf("%-20s "，a[i].zy)；printf("%-5d "，a[i].类)；printf("%-9.2lf "，a[i].jcj)；printf("%-9.2lf "，a[i].pcj)；printf("%-9.2lf "，a[i].zcj)；printf(" \ n ")；} } }破；案例二:破；} getchar()；getchar()；系统(“暂停”)；} void modify() { int i，n，m；int修改_编号；/*输入修改对象的学号*/system(" cls ")；Printf("欢迎修改函数\ n \ n \ n ")；printf("-| \ n ")；Printf("|修改菜单| \ n ")；Printf("| 1。修改所有信息| \ n ")；Printf("| 2。修改特定的信息| \ n ")；Printf("| 3。退出修改功能| \ n ")；printf("-| \ n ")；Printf("请输入您的选择:")；scanf("%d "，& ampn)；getchar()；switch(n){ case 1:printf(" \ n \ n请输入您要修改的对象的学号:")；scanf("%d "，& ampmodify _ number)；for(I = 0；我& lt=39;I++) {if (modify _ number = = a [I]。number) {printf("学号:")；scanf("%d "，& amp甲[我]。号)；getchar()；printf(" name:")；获取(a[i])。姓名)；Printf("性别:")；甲[我]。sex = getchar()；getchar()；Printf("学院:")；获取(a[i])。xy)；Printf("专业:")；获取(a[i])。zy)；