c语言代码解决问题

解题思路:

注意事项:

参考代码:

#include<stdio.h>

int main()

{

    int n, a[100], i;

    float sum_1 = 0.0, sum_2 = 0.0, sum_3 = 0.0, sum_4 = 0.0;

    scanf("%d", &n);

    for (i = 0; i < n; i++)

        scanf("%d", &a[i]);

    for (i = 0; i < n; i++)

    {

        if (a[i] <= 18 && a[i] >= 0)

            sum_1+=1.0;

        else if (a[i] >= 19 && a[i] <= 35)

            sum_2+=1.0;

        else if (a[i] >= 36 && a[i] <= 60)

            sum_3+=1.0;

        else if (a[i] >= 61)

            sum_4+=1.0;

    }

    printf("%.2f%%\n%.2f%%\n%.2f%%\n%.2f%%\n",100.0* sum_1 / (float)n, 100.0*sum_2 / (float)n, 100.0*sum_3 / (float)n, 100.0*sum_4 / (float)n);

    return 0;

}