C/Development/Beep

Материал из C\C++ эксперт
Перейти к: навигация, поиск

Beep a sound

  
#include <stdio.h>
int main(void)
{
  printf("\a");
  return 0;
}


Countdown program: beep

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
int main(int argc, char *argv[])
{
  int disp, count;
  if(argc<2) {
    printf("You must enter the length of the count\n");
    printf("on the command line.  Try again.\n");
    exit(1);
  }
  if(argc==3 && !strcmp(argv[2], "display")) disp = 1;
  else disp = 0;
  for(count=atoi(argv[1]); count; --count)
    if(disp) printf("%d\n", count);
  putchar("\a");  /* this will ring the bell */
  printf("Done");
  return 0;
}