c++ fstream create if not exists
#include <iostream>
#include <fstream>
int main() {
std::ofstream file("example.txt", std::ios::out | std::ios::app);
if (!file.is_open()) {
std::cerr << "Error opening the file." << std::endl;
return 1;
}
// Write data to the file
file << "Hello, World!" << std::endl;
// Close the file
file.close();
return 0;
}