求c++,1到n之间各奇数平方和，要最简单的那种，我才刚学，小bai一个，理解不了太有深度的程序语言

#include <iostream>
int main(void)
{
int i =1, n;    //循环的初始值
cout<<"请输入整数N:"<<endl;
scanf("%d", &n);

int sum = 0;//放和的变量        
while(i<=n){
if(i%2!=0){
sum= sum+(i*i); 
}
i++;
}
cout<<"平方和是："<<sum<<endl;
getchar();
return 0;
}

int i =1, n;
int sum = 0;
cin>> n;
while(i <= n) {
    if ( i % 2 == 1) {
        sum += i * i;
    }
}

cout << "sum=" << sum << endl;