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Strings - Programming

Q1:

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

int main()
{
    char str1[] = "Hello";
    char str2[] = "Hello";
    if(str1 == str2)
        printf("Equal\n");
    else
        printf("Unequal\n");
    return 0;
}

A Equal

B Unequal

C Error

D None of above

ANS:B - Unequal

Step 1: char str1[] = "Hello"; The variable str1 is declared as an array of characters and initialized with a string "Hello". Step 2: char str2[] = "Hello"; The variable str2 is declared as an array of characters and initialized with a string "Hello". We have use strcmp(s1,s2) function to compare strings. Step 3: if(str1 == str2) here the address of str1 and str2 are compared. The address of both variable is not same. Hence the if condition is failed. Step 4: At the else part it prints "Unequal".