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Expressions - Programming

Q1:

What will be the output of the program? 
#include<stdio.h>
int main()
{
    int x=12, y=7, z;
    z = x!=4 || y == 2;
    printf('z=%d\n', z);
    return 0;
}

A z=0

B z=1

C z=4

D z=2

ANS:A - z=0

Step 1: int x=12, y=7, z; here variable x, y and z are declared as an integer and variable x and y are initialized to 12, 7 respectively. Step 2: z = x!=4 || y == 2;
becomes z = 12!=4 || 7 == 2;
then z = (condition true) || (condition false); Hence it returns 1. So the value of z=1. Step 3: printf('z=%d\n', z); Hence the output of the program is 'z=1'.