1.已知数组array[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};求数组中元素的平均值。
先求和,再除以数量
#include <stdio.h>
int main()
{
int array[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0},sum=0,i;
double avg = 0;
for(i=0;i<10;i++)
sum += array[i];
avg = sum / 10.0;
printf("平均值为:%.2f",avg);
}
print((1+9)*9/2/10)