The Egoist.

So, was wondering how a password field could be written in a compact way. The following source code in C, is just one of the many ways to do it.
Read through, and suggest optimizations if you can think of any.

The code:

//START.

#include "stdio.h"

#include "ctype.h"

#include "conio.h"

int counter;

char str[500];

void removelast(int);

int main(void){

  char c;

  int i;

   do{

    c = getch();

    i = (int)c;

    if(i == 13)

      goto end;

    else if(i == 8 && counter > 0){

      removelast(counter);

      putchar(0x08);

      putchar(0x20);

      putchar(0x08);

    }

    if(isprint(c)){

      printf("*");

      str[++counter] = c;

    }

  } while(counter <>

 end:

  printf("\nThe entered string is ");

  for(i=1;i<=counter;i++)

    printf("%c",str[i]);

  return 0;

}

void removelast(int a){

  str[a] = NULL;

  counter--;

}

//END.

 The above source code is allowed to be copied, transmitted,stored, and used in any way the reader sees fit. I just want people to appreciate what and how a small and beautifully written code can do wonders.