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  1. #include <unistd.h>
  2. #include <sys/types.h>
  3. #include <stdio.h>
  4.  
  5. int main()
  6. {
  7.     pid_t child_pid;
  8.     int i, j, n;
  9.     int sum;
  10.  
  11.     //printf("Enter the last number of series : ");
  12.     scanf("%d", &n);
  13.     printf("pid = %d\n", getpid());
  14.  
  15.     for(i = 0; i < 2; i++)
  16.     {
  17.         child_pid = fork();
  18.         if (child_pid < 0)
  19.         {
  20.             printf("Failed to create child process . . .");
  21.             return 1;
  22.         }
  23.         else if (child_pid == 0)
  24.         {
  25.             if (i == 0) //find the sum of odd series
  26.             {
  27.                 sum = 0;
  28.                 for(j = 1; j <= n; j += 2)
  29.                     sum += j;
  30.  
  31.                 printf("Sum of Odd series : %d\n", sum);
  32.                 exit(0);
  33.             }
  34.             else if (i == 1) //find the sum of even series
  35.             {
  36.                 sum = 0;
  37.                 for(j = 2; j <= n; j += 2)
  38.                     sum += j;
  39.  
  40.                 printf("Sum of Even series : %d\n", sum);
  41.                 exit(0);
  42.             }
  43.  
  44.         }
  45.         else
  46.         {
  47.             wait(&child_pid);
  48.         }
  49.     }
  50.     return 0;
  51. }
Success #stdin #stdout 0s 2296KB
comments ()
stdin
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12
stdout
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pid = 6993
Sum of Odd series : 36
pid = 6993
Sum of Even series : 42
pid = 6993
https://ideone.com/TyIkJa
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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