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Expressions - Programming

Q1:

What will be the output of the program? 
#include<stdio.h>
int main()
{
    int i=4, j=-1, k=0, w, x, y, z;
    w = i || j || k;
    x = i && j && k;
    y = i || j &&k;
    z = i && j || k;
    printf('%d, %d, %d, %d\n', w, x, y, z);
    return 0;
}

A 1, 1, 1, 1

B 1, 1, 0, 1

C 1, 0, 0, 1

D 1, 0, 1, 1

ANS:A - 1, 1, 1, 1

Step 1: int i=4, j=-1, k=0, w, x, y, z; here variable i, j, k, w, x, y, z are declared as an integer type and the variable i, j, k are initialized to 4, -1, 0 respectively. Step 2: w = i || j || k; becomes w = 4 || -1 || 0;. Hence it returns TRUE. So, w=1 Step 3: x = i && j && k; becomes x = 4 && -1 && 0; Hence it returns FALSE. So, x=0 Step 4: y = i || j &&k; becomes y = 4 || -1 && 0; Hence it returns TRUE. So, y=1 Step 5: z = i && j || k; becomes z = 4 && -1 || 0; Hence it returns TRUE. So, z=1. Step 6: printf('%d, %d, %d, %d\n', w, x, y, z); Hence the output is '1, 0, 1, 1'.