用递归算法求数组a【】中n个整数的平均值,n个整数之和答:include <stdio.h> main(){ int n,t,a[100];//暂定最大为100 printf("input array size:\n");scanf("%d",&n);printf("input array [%d]:\n",n);for(t=0;t<n;t++)scanf("%d",&a[t]);t=counter(a,n);//只算一次,递归费时 printf("total: %d, average: %d",t,t/n...