Q. Find String length without using strlen( ) ?

THE OUTPUT WOULD BE

#include<stdio.h>
#include<conio.h>
#include<string.h>
  void main( )
  {   clrscr( );
  char s1[25];
  int i=0;
  printf("Enter a string: ");
  gets(s1);
  while(s1[i]!='\0')
  i++;
  printf("String length=%d",i);
  getch( );
  }