在c++中打开文件，删除标点符号并附加到另一个文件中

#include <iostream>
#include <fstream>
#include <string>
#include <cctype>
#include <locale>

std::string removePunctuation(const std::string& text) {
    std::string result;
    std::locale loc;

    for (char c : text) {
        if (std::isalnum(c, loc) || std::isspace(c, loc)) {
            result += c;
        }
    }

    return result;
}

std::ifstream inputFile("input.txt");
std::ofstream outputFile("output.txt", std::ios::app);

std::string line;
while (std::getline(inputFile, line)) {
    std::string processedLine = removePunctuation(line);
    outputFile << processedLine << std::endl;
}

inputFile.close();
outputFile.close();

#include <iostream>
#include <fstream>
#include <string>
#include <cctype>
#include <locale>

std::string removePunctuation(const std::string& text) {
    std::string result;
    std::locale loc;

    for (char c : text) {
        if (std::isalnum(c, loc) || std::isspace(c, loc)) {
            result += c;
        }
    }

    return result;
}

int main() {
    std::ifstream inputFile("input.txt");
    std::ofstream outputFile("output.txt", std::ios::app);

    std::string line;
    while (std::getline(inputFile, line)) {
        std::string processedLine = removePunctuation(line);
        outputFile << processedLine << std::endl;
    }

    inputFile.close();
    outputFile.close();

    return 0;
}