使用std :: string打开文件

#include<iostream>
#include <fstream>
#include<filesystem>
#include<string>

int main() {
    std::string filename = "example.txt";
    std::filesystem::path filepath(filename);

    std::ifstream file(filepath);
    if (!file.is_open()) {
        std::cerr << "Failed to open file: "<< filename<< std::endl;
        return 1;
    }

    std::string content((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
    std::cout << "File content: "<< content<< std::endl;

    file.close();
    return 0;
}