Strings - Programming

Q1:

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

int main()
{
    printf("%d\n", strlen("123456"));
    return 0;
}

A 6

B 12

C 7

D 2

ANS:A - 6

The function strlen returns the number of characters in the given string. Therefore, strlen("123456") returns 6. Hence the output of the program is "6".