C++ หาผลรวม 2 -100 เฉพาะเลขคู่ โดยใช้ for, while ,do while

cout << "For Loop" << endl;
int sum_f = 0;
for (int i = 2; i <= 100; i++)
{
if (i % 2 == 0)
{
cout <<setw(10)<< i;
sum_f = sum_f + i;
}
}
cout << endl;
cout << sum_f << endl;

cout << endl;
cout << "while Loop" << endl;
int sum_w = 0;
int n = 2;
while (n <= 100)
{
if (n % 2 == 0)
{
cout << setw(10)<< n ;
sum_w = sum_w + n;
}
n++;
}
cout << endl;
cout << sum_w << endl;

cout << endl;
cout << "do while Loop" << endl;
int sum_d = 0;
int m = 2;
do
{
if (m % 2 == 0)
{
cout <<setw(10)<< m;
sum_d = sum_d + m;
}
m++;
} while (m <= 100);
cout << endl;
cout << sum_d << endl;