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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(int argc, const char* argv[]) {
pid_t pid;
int h;
int count;
if (argc < 2) {
printf("Usage: ./fork process#\n");
return 0;
}
count = atoi(argv[1]) - 1;
printf("Process#: %d\n", count + 1);
printf("Parent started\n");
pid = 1;
for (h = 0; h < count; ++h) {
if ((pid = fork()) < 0)
printf("fork error\n");
else if (pid == 0) {
printf("Child %d started\n", h);
sleep(1);
printf("Child %d finished\n", h);
exit(0);
}
}
printf("Parent waiting\n");
for (h = 0; h < count; ++h) {
wait(NULL);
}
printf("Parent finished\n");
return EXIT_SUCCESS;
}
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