(C++)我试图从一个文本文件中读取并输出一个随机行，但在运行它时一直收到“浮点异常(核心转储)”

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

int main() {
    std::ifstream file("filename.txt");
    if (!file.is_open()) {
        std::cout << "Failed to open the file." << std::endl;
        return 1;
    }

    // 读取文件内容并输出随机行

    file.close();
    return 0;
}

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

int main() {
    std::ifstream file("filename.txt");
    if (!file.is_open()) {
        std::cout << "Failed to open the file." << std::endl;
        return 1;
    }

    // 检查文件是否为空
    if (file.peek() == std::ifstream::traits_type::eof()) {
        std::cout << "The file is empty." << std::endl;
        file.close();
        return 1;
    }

    // 读取文件内容并输出随机行

    file.close();
    return 0;
}

#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <random>

int main() {
    std::ifstream file("filename.txt");
    if (!file.is_open()) {
        std::cout << "Failed to open the file." << std::endl;
        return 1;
    }

    // 检查文件是否为空
    if (file.peek() == std::ifstream::traits_type::eof()) {
        std::cout << "The file is empty." << std::endl;
        file.close();
        return 1;
    }

    // 统计文件中的行数
    std::vector<std::string> lines;
    std::string line;
    while (std::getline(file, line)) {
        lines.push_back(line);
    }

    // 检查要读取的行数是否超过文件中的行数
    if (lines.empty()) {
        std::cout << "The file does not contain any lines." << std::endl;
        file.close();
        return 1;
    }

    std::random_device rd;
    std::mt19937 gen(rd());
    std::uniform_int_distribution<> dis(0, lines.size() - 1);
    int randomIndex = dis(gen);

    std::cout << "Random line: " << lines[randomIndex] << std::endl;

    file.close();
    return 0;
}