Question

C++,已知a数组int a[10]={1,2,3,4,5,6,7,8,9,10};,编写程序,求a数组中偶数的个数和偶数的平均值

C++,已知a数组int a[10]={1,2,3,4,5,6,7,8,9,10};,编写程序,求a数组中偶数的个数和偶数的平均值

Answer 1

int main()
{
int i,num=0,sum=0,average=0;
int a[]={1,2,3,4,5,6,7,8,9,10};
for (i=0;i<10;i++)
{
if(a[i]%2==0)
{
num++;
sum=sum+a[i];
}
}
average = sum/num;
printf("偶数的个数是%d， 平均值是%d\n",num,average);
return 0;
}

Answer 2

#include <iostream>
using namespace std;
int main()
{
int i = 0;
int num = 0;
int avg = 0;
int a[] = { 1,2,3,4,5,6,7,8,9,10 };
for (i = 0; i < 10; i++)
{
if(a[i] % 2 == 0)
{
num++;
avg +=a[i];
}
}
avg /= num;
cout << "num：" << num << " avg: " << avg << endl;
return 0;
}