//Evaluating complex expressions.
#include <iostream.h>
int main()
{
int a=0, b=0, x=0, y=35;
cout << "a: " << a << " b: " << b;
cout << " x: " << x << " y: " << y << endl;
a = 9;
b = 7;
y = x = a+b;
cout << "a: " << a << " b: " << b;
cout << " x: " << x << " y: " << y << endl;
return 0;
}