28 lines
543 B
C
28 lines
543 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
int main(void) {
|
|
pid_t pid, pid1;
|
|
|
|
pid = fork();
|
|
|
|
if (pid < 0) {
|
|
fprintf(stderr, "Fork failed");
|
|
return EXIT_FAILURE;
|
|
} else if (pid == 0) {
|
|
pid1 = getpid();
|
|
printf("child: pid = %d\n", pid); // A
|
|
printf("child: pid1 = %d\n", pid1); // B
|
|
} else {
|
|
pid1 = getpid();
|
|
printf("parent: pid = %d\n", pid); // C
|
|
printf("parent: pid1 = %d\n", pid1); // D
|
|
wait(NULL);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|