Question 3

Run the following code and explain, using your own words, what is happening with each

variable (w,x,y,z) and what is the difference between ++x and w++ (is there any

influence on the result between prefix or postfix ++ operator?). Provide a snippet of the

output showing the result.

int main()

{

int w = 20, x = 20;

int y = 5, z = 5;

y = y + (++x);

z = z + (w++);

cout << "x=" << x << " and y=" << y << endl;

cout << "w=" << w << " and z=" << z << endl;

system("pause");

return 0;

}

Provide a paragraph that answers question 3.

Provide 4 valid test cases for (w, x, y, z).

Test #	Valid / Invalid Data	Description of test	Input Value	Actual Output	Test Pass / Fail
1	Valid		W		Pass
2	Valid		X		Pass
3	Valid		Y		Pass
4	Valid		Z		Pass