Question

What is the value of p in the following C++ code snippet?

1. #include <iostream>

2.     using namespace std;

3.     int main()

4.     {

5.         int p;

6.         bool a = true;

7.         bool b = false;

8.         int x = 10;

9.         int y = 5;

10.         p = ((x | y) + (a + b));

11.         cout << p;

12.         return 0;

13.     }

a) 12
b) 0
c) 2
d) 16

Answer 1

Answer: d
Explanation: | means bitwise OR operation so x | y (0101 | 1010) will be evaluated to 1111 which is integer 15 and as a is true and b is false so a+b(1 + 0) = 1. So final value of expression in line #10 will be 15 + 1 = 16.