#include<iostream>
using namespace std;
int a;
int b;
int main() {
for (int i = 4; i < 20; i++) {
a = i;
if (i % 2 == 0) {
b = i * a;
cout << b << endl;
}
system("pause");
#include<iostream>
using namespace std;
int a;
int b;
int main() {
for (int i = 4; i < 20; i++) {
a = i;
if (i % 2 == 0) {
b = i * a;
cout << b << endl;
}
}
cout << b << endl;
system("pause");
}