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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
int main(void){
pid_t kind2;
pid_t kind3;
pid_t kind4;
pid_t kind5;
pid_t kind6;
kind2 = fork();
if(kind2 < 0) {
fprintf(stderr, "cannot fork, error %d\n", errno);
exit(EXIT_FAILURE);
}
if(kind2 == 0)
{
printf("[PID: %d, PPID: %d ] i'm Process 2\n", getpid(), getppid() );
kind3 = fork();
if(kind3 < 0)
{
fprintf(stderr, "cannot fork, error %d\n", errno);
exit(-3);
}
if(kind3 == 0)
{
printf("[PID: %d, PPID: %d ] i'm Process 3\n", getpid(), getppid() );
exit(32);
}
/*if(kind3 > 0)
{
printf("[PID: %d, PPID: %d ] i'm Process 1\n", getpid(), getppid() );
}*/
exit(2);
}
if(kind2 > 0){
printf("[PID: %d, PPID: %d ] i'm Process 1\n", getpid(), getppid() );
kind4 = fork();
if(kind4 < 0)
{
fprintf(stderr, "cannot fork, error %d\n", errno);
exit(-4);
}
if(kind4 == 0)
{
printf("[PID: %d, PPID: %d ] i'm Process 4\n", getpid(), getppid() );
kind5 = fork();
if(kind5 < 0)
{
fprintf(stderr, "cannot fork, error %d\n", errno);
exit(-5);
}
if(kind5== 0)
{
printf("[PID: %d, PPID: %d ] i'm Process 5\n", getpid(), getppid() );
exit(52);
}
else if(kind5 > 0){
printf("[PID: %d, PPID: %d ] i'm Process 4\n", getpid(), getppid() );
kind6 = fork();
if(kind6 < 0)
{
fprintf(stderr, "cannot fork, error %d\n", errno);
exit(-6);
}
if(kind6 == 0)
{
printf("[PID: %d, PPID: %d ] i'm Process 6\n", getpid(), getppid() );
exit(62);
}
}
exit(42);
}
exit(1);
}
return 0;
} |
