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

/* pstree output when trying rateau 10

-+= 51443 yunes ./rateau 10
 |--- 51444 yunes ./rateau 10
 |--- 51445 yunes ./rateau 10
 |--- 51446 yunes ./rateau 10
 |--- 51447 yunes ./rateau 10
 |--- 51448 yunes ./rateau 10
 |--- 51449 yunes ./rateau 10
 |--- 51450 yunes ./rateau 10
 |--- 51451 yunes ./rateau 10
 |--- 51452 yunes ./rateau 10
 \--- 51453 yunes ./rateau 10

*/

// warning: no real error handling there...
int main(int argc,char *argv[]) {
  int n;
  sscanf(argv[1],"%d",&n);
  for (int i=0; i<n; i++) {
    pid_t p = fork();
    switch(p) {
    case -1:
      break; // error handling here...
    case 0:
      sleep(10);
      exit(0); //
    default:
      break;
    }
  }
  for (int i=0; i<n; i++) {
    if (wait(NULL)==-1) break; //
  }
  exit(0);
}