有没有针对ifstream和ofstream的宏或者缩短ifstream/ofstream的方法？

#include <fstream>

int main() {
    using IStream = std::ifstream;
    using OStream = std::ofstream;

    IStream fileIn("input.txt");
    OStream fileOut("output.txt");

    // 使用fileIn和fileOut进行读写操作
    return 0;
}

#include <fstream>

#define IFSTREAM(file) std::ifstream(file)
#define OFSTREAM(file) std::ofstream(file)

int main() {
    IFSTREAM fileIn("input.txt");
    OFSTREAM fileOut("output.txt");

    // 使用fileIn和fileOut进行读写操作
    return 0;
}

#include <iostream>
#include <fstream>

#define IFSTREAM(file) std::ifstream(file)
#define OFSTREAM(file) std::ofstream(file)

int main() {
    IFSTREAM fileIn("input.txt");
    if (!fileIn) {
        std::cerr << "Failed to open input file." << std::endl;
        return 1;
    }

    OFSTREAM fileOut("output.txt");
    if (!fileOut) {
        std::cerr << "Failed to open output file." << std::endl;
        return 1;
    }

    std::string line;
    while (std::getline(fileIn, line)) {
        fileOut << line << std::endl;
    }

    return 0;
}