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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <unistd.h>
  4. #include <signal.h>
  5.  
  6. void signchld (int signal){
  7. 	fprintf (stderr, "[X] child exited\n");
  8. }
  9.  
  10.  
  11. int main(){
  12.     signal (SIGCHLD, signchld);
  13.     int i;
  14.     for(i=0;i<=300;i++){
  15.         pid_t f;
  16.         f=fork();
  17.         if(f==0){
  18.             //child
  19.             usleep(3*1000000);
  20.             fprintf (stderr, "[C1] %d\n",i);
  21.             exit(0);
  22.             fprintf (stderr, "[C2] %d\n",i);
  23.         }else if(f>0){
  24.             fprintf (stderr, "[P1] %d\n",i);
  25.             usleep(20000000);
  26. 	    fprintf (stderr, "[P2] %d\n",i);
  27.         }
  28.     }
  29.     return 0;
  30. }
  31.  
Time limit exceeded #stdin #stdout #stderr 5s 2244KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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[P1] 0
[C1] 0
[X] child exited
[P2] 0
[P1] 1
[C1] 1
[X] child exited
[P2] 1
[P1] 2
[C1] 2
[X] child exited
[P2] 2
[P1] 3
https://ideone.com/cNypUb
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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