C - Escrevendo 40 Caracteres

#include
#include <stdio.h>
#include <stdlib.h>

#define ENTER 0x0d        //Enter key

void main()
{
    int x;
    char c;

    printf("You can type up to 40 characters.\n");

    for(x=0;;x++)
    {
        c=getch();
        if(c==ENTER || x==40)    //look for CAPS
            break;                              //make it little
        putch(c);                            //display character
    }
}