string length using functions

#include<stdio.h>

int string_length(int j, char a[])
{
	   while(a[j]!='\0')
    {
        j++;
    }
	
    return j;
	
}

int main()
{   

    char s[50];
    int i=0,l;
    printf("enter a string\n");
    gets(s);
    
    l=string_length(i, s);
    printf("l=%d",l);
    
   }

     

           

Note: Need to be arranged in compiler after copied

   

 OutPut:

enter a string Hello World l=11