Length of the string without using library function

Length of the string without using library function

#include<stdio.h>

main()

{

                char s[20];

                int i = 0 ;

                printf("\n Enter a string: ");

                gets(s);

                while(s[i] != '\0')

                {

                                i++;

                }

                printf("\n Length of string: %d", i );

}

Output:

 Enter a string: Hello Hii

 Length of string: 9