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  1. #include <stdio.h>
  2. #include <unistd.h>
  3. #include <stdlib.h>
  4. #include <sys/wait.h>
  5. #include <time.h>
  6.  
  7. int main() {
  8.     srand(time(NULL)); 
  9.     printf("A");
  10.     fflush(stdout);
  11.  
  12.     if (fork() == 0) {
  13.         usleep(((rand() % 5) + 1) * 10000); 
  14.         printf("B");
  15.         fflush(stdout);
  16.  
  17.         if (fork() == 0) {
  18.             usleep(((rand() % 5) + 1) * 10000); 
  19.             printf("C");
  20.             fflush(stdout);
  21.         } else {
  22.             wait(NULL);
  23.             printf("D");
  24.             fflush(stdout);
  25.         }
  26.     } else {
  27.         usleep(((rand() % 5) + 1) * 10000); 
  28.         printf("E");
  29.         fflush(stdout);
  30.         wait(NULL);
  31.     }
  32.  
  33.     return 0;
  34. }
  35.  
  36.  
  37.  
Success #stdin #stdout 0s 5328KB
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AEBCD
https://ideone.com/zCWWkP
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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