第六次作业

A.（1）#include<stdio.h>
int sum=0;
int OddSum(int n)
{
    if(n%2)
        sum+=n;
    return sum;
}
    int main()//求几个数中所有奇数的和 
{
    int Sum,n,i,answer;
        printf("请输入n的值:");
        scanf("%d",&n);
        printf("请输入，每个值用空格隔开
");
    for(i=0;i<n;i++)
    {
        scanf("%d",&Sum);
        answer=OddSum(Sum);
    }    
        printf("%d个整数中所有的奇数和为%d
",n,answer);
    return 0;
}

B.学生管理系统
#include<stdio.h>
void f1()//
{    int n;
    printf("请输入该名学生学号后两位:
");
    scanf("%d",&n);
    switch(n){//第二层次 
        case 01:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
            {    
               int choice; 
                switch(choice)//第三层次 
                {
                    case 1:
                    printf("
");//把作业内容复制粘贴进去即可，以下雷同。 
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            }
                                
    break;
        case 02:
            printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                                            {
                            int choice; 
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
               } 
        break;
        case 03:
            printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                        int choice;         
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
               } 
        break;
    }
}
void f2()
{    int n;
    printf("请输入该名学生学号后两位:
");
    scanf("%d",&n);
    switch(n){
        case 01:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                        int choice;          
                       switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            } 
        break;
        case 02:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                        int choice;          
                       switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
                            }
        break;
        case 03:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
               } 
        break;
    }
} 
void f3()
{    int n;
    printf("请输入该名学生学号后两位:
");
    scanf("%d",&n);
    switch(n){
        case 01:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                       switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            } 
        break;
        case 02:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                       switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            } 
        break;
        case 03:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                       switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            } 
        break;
    }
}
void f4()
{    int n;
    printf("请输入该名学生学号后两位:
");
    scanf("%d",&n);
    switch(n){
        case 01:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            } 
        break;
        case 02:
            printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
            } 
        break;
        case 03:
            printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
               } 
        break;
    }
}
void f5()
{    int n;
    printf("请输入该名学生学号后两位:
");
    scanf("%d",&n);
    switch(n){
        case 01:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                        switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
                            }
        break;
        case 02:
            printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                       switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
                            }
        break;
        case 03:
        printf("         1.作业1
");
            printf("         2.作业2
");
                printf("         3.作业3
");
                    printf("         4.作业4
");
                        printf("         5.作业5
");
                            printf("         6.作业6
");
                            {
                                int choice; 
                switch(choice)
                {
                    case 1:
                    printf("
");
                    break;
                        case 2:
                    printf("
");
                    break;
                        case 3:
                    printf("
");
                    break;
                        case 4:
                    printf("
");
                    break;
                        case 5:
                    printf("
");
                    break;
                        case 6:
                    printf("
");
                    break;
                }
                            }
        break;
    }
}
int main()
{   int flag=0;
    do{
    int choice; 
        printf("                计科三班学生作业管理系统
");
        printf("                     1.第一次作业
");
        printf("                     2.第二次作业
");
        printf("                     3.第三次作业
");
        printf("                     4.第四次作业
");
        printf("                     5.第五次作业
");
        printf("                     0.退出，
");
        printf("请输入你的选择:
");
    scanf("%d,&flag");
        switch(flag){//第一层次 
        case 0:    break;
        case 1:    f1();   break;
         case 2:    f2();   break;
         case 3:    f3();   break;
         case 4:    f4();   break;
         case 5:    f5();   break;
         default:           break;
             }
             }while(flag!=0);
    return 0;
    }