Linux 上的 unistd.h 和 c99

Linux上的unistd.h和c99

c
#include 
#include 
int main() {
    pid_t pid = fork();
    if (pid < 0) {
        printf("Fork failed.\n");
    } else if (pid == 0) {
        printf("This is the child process.\n");
    } else {
        printf("This is the parent process. Child process ID is %d.\n", pid);
    }
    return 0;
}

c
#include 
#include 
void print_args(int count, ...) {
    va_list args;
    va_start(args, count);
    for (int i = 0; i < count; i++) {
        int arg = va_arg(args, int);
        printf("%d ", arg);
    }
    va_end(args);
    printf("\n");
}
int main() {
    print_args(3, 1, 2, 3);
    print_args(5, 10, 20, 30, 40, 50);
    return 0;
}