fork was not declared in this scope
#include <iostream>
#include <unistd.h>
int main() {
pid_t pid = fork();
if (pid == -1) {
// Handle error
std::cerr << "Fork failed!" << std::endl;
return 1;
} else if (pid > 0) {
// Parent process
std::cout << "This is the parent process. Child PID: " << pid << std::endl;
} else {
// Child process
std::cout << "This is the child process. PID: " << getpid() << std::endl;
}
return 0;
}