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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <unistd.h>
  4. #include <sys/types.h>
  5. #include <time.h>
  6.  
  7. int main()
  8. {
  9.  
  10.     FILE *fp = fopen("test.txt", "wt");  //저장할 파일 생성.
  11.  
  12.     int i;
  13.     int j;
  14.     int k;
  15.     int status;
  16.     time_t rawtime;                     // 시간 출력
  17.     struct tm *timeinfo;
  18.  
  19.     int dead_child_pid;
  20.     time(&rawtime);
  21.     timeinfo = localtime(&rawtime);
  22.  
  23.     pid_t pid;
  24.     pid_t pid_child;                    //   부모와 자식의 pid확인 및 pid리턴값
  25.     pid_t pid_parent;
  26.     pid_t a[10];
  27.  
  28.  
  29.  
  30.     for(i=0; i<5;i++)
  31.     {
  32.         pid = fork();
  33.  
  34.  
  35.  
  36.         if (pid == -1)
  37.         {
  38.             fprintf(stderr, "fork failed");
  39.             return 1;
  40.         }
  41.         else if(pid==0)
  42.         {
  43.  
  44.             for(j=0;j<3;j++)
  45.             {
  46.                 printf("[%dprocess] #%d\n",getpid(),j);
  47.             }
  48.             return 0;
  49.         }
  50.     }
  51.  
  52.     while((dead_child_pid = wait(NULL)) != -1) {
  53.         printf("%d [child] 종료. %d [부모]\n", dead_child_pid, getpid());
  54.     }
  55.  
  56.     return 0;
  57. }
  58.  
Success #stdin #stdout 0s 1964KB
comments (?)
stdin
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Standard input is empty
stdout
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[5058process] #0
[5058process] #1
[5058process] #2
[5059process] #0
[5059process] #1
[5059process] #2
[5057process] #0
[5057process] #1
[5057process] #2
[5056process] #0
[5056process] #1
[5056process] #2
[5055process] #0
[5055process] #1
[5055process] #2
5058 [child] 종료. 5052 [부모]
5059 [child] 종료. 5052 [부모]
5057 [child] 종료. 5052 [부모]
5056 [child] 종료. 5052 [부모]
5055 [child] 종료. 5052 [부모]
https://ideone.com/mf9JV2
language:
C (gcc 8.3)
created:
13 years ago
visibility:
public

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