#include <iostream>
using namespace std;
int main() {
int a, b;
// 2 is assigned to a
a = 2;
// 7 is assigned to b
b = 7;
cout << "a = " << a << endl;
cout << "b = " << b << endl;
cout << "
After a += b;" << endl;
// assigning the sum of a and b to a
a += b; // a = a +b
cout << "a = " << a << endl;
return 0;
}