String Length without using string function

#include<stdio.h>
#include<conio.h>
void main()
{
char str[20];
int i=0;
clrscr();
printf("Enter the String\t");
scanf("%s",str);
printf("The String is\t");
while(str[i]!='\0')
{
  printf("%c",str[i++]);
}
printf("\nThe String Length is %d",i);
getch();
}


OUTPUT:

Enter the String   Tushar

The String is Tushar

The String Length is 6