题解 | #HJ105 记负均正II#

#include <stdio.h>
 
int main() {
    int num;
    int negativeCount = 0, nonNegativeSum = 0, nonNegativeCount = 0;
    double nonNegativeMean = 0;
    while (scanf("%d", &num) != EOF) {
        if (num < 0) {
            negativeCount++;
        } else {
            nonNegativeSum += num;
            nonNegativeCount++;
        }
    }
    if (nonNegativeCount == 0) {
        nonNegativeMean = 0;
    } else {
        nonNegativeMean =(double)nonNegativeSum/nonNegativeCount;
    }
    printf("%d\n", negativeCount);
    printf("%.1f\n", nonNegativeMean);
    return 0;
}