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Strings - Programming

Q1:

What will be the output of the program ? 
#include<stdio.h>

int main()
{
    int i;
    char a[] = "\0";
    if(printf("%s", a))
        printf("The string is not empty\n");
    else
        printf("The string is empty\n");
    return 0;
}

A The string is not empty

B The string is empty

C No output

D 0

ANS:B - The string is empty

The function printf() returns the number of charecters printed on the console. Step 1: char a[] = '\0'; The variable a is declared as an array of characters and it initialized with "\0". It denotes that the string is empty. Step 2: if(printf("%s", a)) The printf() statement does not print anything, so it returns '0'(zero). Hence the if condition is failed. In the else part it prints "The string is empty".