linux fork多个进程

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>

void child_process(int id) {
    printf("Child process %d with PID %d\n", id, getpid());
}

int main() {
    int num_processes = 5;
    pid_t pids[num_processes];

    for (int i = 0; i < num_processes; ++i) {
        pid_t pid = fork();
        if (pid == -1) {
            perror("fork");
            exit(EXIT_FAILURE);
        } else if (pid == 0) {
            child_process(i);
            exit(EXIT_SUCCESS);
        }
        pids[i] = pid;
    }

    for (int i = 0; i < num_processes; ++i) {
        wait(NULL); // Wait for all child processes to finish
    }

    printf("All child processes have finished.\n");
    return 0;
}