随机生成求平均数111

Question

随机生成10个小于100的整数，并放入一维数组存放，编程求小于80且大于9的平均数，保留两位

Answer 1

#include <stdio.h>
#include <iostream>
#include <time.h>

int main()
{
    srand((unsigned)time(NULL));
    int num[10] = { 0 }, sum = 0,count=0;
    for (int i = 0; i < 10; i++)
    {
        num[i] = rand() % 100;
        if (num[i] > 9 && num[i] < 80) {
            sum += num[i];
            printf("%d ", num[i]);
            count += 1;
        }
    }
    printf("\n平均数为：%.2f\n", 1.0 * sum / count);
    system("pause");
    return 0;
}