键盘输入一批非零整数，输出其中的偶数、奇数的平均值，用零作为终止标记。

Question

键盘输入一批非零整数，输出其中的偶数、奇数的平均值，用零作为终止标记。

Answer 1

#include <stdio.h>

int main() {
    int num, count_even = 0, count_odd = 0;
    int sum_even = 0, sum_odd = 0;
    float avg_even, avg_odd;

    printf("Please enter a series of non-zero integers, terminated by 0:\n");

    while (1) {
        scanf("%d", &num);
        if (num == 0) {
            break;
        }
        if (num % 2 == 0) {
            count_even++;
            sum_even += num;
        } else {
            count_odd++;
            sum_odd += num;
        }
    }

    if (count_even == 0) {
        printf("No even numbers entered.\n");
    } else {
        avg_even = (float)sum_even / count_even;
        printf("Average of even numbers: %.2f\n", avg_even);
    }

    if (count_odd == 0) {
        printf("No odd numbers entered.\n");
    } else {
        avg_odd = (float)sum_odd / count_odd;
        printf("Average of odd numbers: %.2f\n", avg_odd);
    }

    return 0;
}