Length of String using strlen

#include <stdio.h>
#include<conio.h>
#include<string.h>
int main()
{ char s[100],i;
int l;
clrscr();
printf("\n\n program to calculate length of string using strlen");
printf("\n Enter a string: ");
scanf("%s",s);
l = strlen(s);
printf("\n Length of string: %d",l);
getch();
}