求数组int a【20】中奇数的个数和平均值,以及偶数的个数及平均值 C语...答:include<stdio.h>int main(){int arr[20]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};int qscore=0,oscore=0;//奇数数量与偶数数量int qpj=0,opj=0;//奇数平均值与偶数平均值int i;for(i=0;i<20;i++){if(arr[i]%2==0){oscore++;opj=opj+arr[i]...