c语言 6-11

1、

#include <stdio.h>

#define NUMBER 7

int search(const int x[], int y[], int key, int n)
{
    int i, times = 0;
    for(i = 0; i < n; i++)
    {
        if(x[i] == key)
        {
            y[times] = i;
            times++;
        }
    }
    return times;
}

void print(const int x[], int n)
{
    int i;
    for(i = 0; i < n; i++)
    {
        printf("%d
", x[i]);
    }
}

int main(void)
{
    int i, ky, a[NUMBER], b[NUMBER], num;
    puts("please input the elements.");
    for(i = 0; i < NUMBER; i++)
    {
        printf("NO.%d = ", i + 1); scanf("%d", &a[i]);
    }
    printf("the destination ky: "); scanf("%d", &ky);
    printf("the times: %d
", num = search(a, b, ky, NUMBER));
    if(num != 0)
        puts("show the index.");
    print(b,num);
    return 0;
}