#include #include #include int main() { pid.t pid, pid1; /* fork a child process */ pid = fork(); if (pid < 0) { /* error occurred */ fprintf(stderr, "Fork Failed"); return 1; } else if (pid pidi = getpid(); printf("child: pid = %d",pid); /* A */ printf("child: pid1 } else { /* parent process */ pid1 = getpid(); printf ("parent: pid = %d",pid); /* C */ printf("parent: pid1 wait (NULL); } 0) { /* child process */ %3D %d", pid1); /* B */ %3D %a",pid1); /* D */ return 0; }
#include #include #include int main() { pid.t pid, pid1; /* fork a child process */ pid = fork(); if (pid < 0) { /* error occurred */ fprintf(stderr, "Fork Failed"); return 1; } else if (pid pidi = getpid(); printf("child: pid = %d",pid); /* A */ printf("child: pid1 } else { /* parent process */ pid1 = getpid(); printf ("parent: pid = %d",pid); /* C */ printf("parent: pid1 wait (NULL); } 0) { /* child process */ %3D %d", pid1); /* B */ %3D %a",pid1); /* D */ return 0; }
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
What are the pid values?
Transcribed Image Text:#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
int main()
{
pid.t pid, pid1;
/* fork a child process */
pid = fork();
if (pid < 0) { /* error occurred */
fprintf(stderr, "Fork Failed");
return 1;
}
else if (pid
pidi = getpid();
printf("child: pid = %d",pid); /* A */
printf("child: pid1
}
else { /* parent process */
pid1 = getpid();
printf ("parent: pid = %d",pid); /* C */
printf("parent: pid1
wait (NULL);
}
0) { /* child process */
%3D
%d", pid1); /* B */
%3D
%a",pid1); /* D */
return 0;
}
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