C++从文件流中读取unsigned char

#include<iostream>
#include <fstream>

int main() {
    std::ifstream input_file("input.bin", std::ios::binary);
    if (!input_file.is_open()) {
        std::cerr << "Error opening file"<< std::endl;
        return 1;
    }

    unsigned char buffer;
    while (input_file.read(reinterpret_cast<char*>(&buffer), sizeof(unsigned char))) {
        std::cout<< static_cast<int>(buffer) << " ";
    }

    input_file.close();
    return 0;
}