如何在C++中将CSV文件读入矢量

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

std::vector<std::vector<std::string>> readCSV(const std::string& filename) {
    std::vector<std::vector<std::string>> data;
    std::ifstream file(filename);
    std::string line;

    while (std::getline(file, line)) {
        std::vector<std::string> row;
        std::stringstream ss(line);
        std::string cell;

        while (std::getline(ss, cell, ',')) {
            row.push_back(cell);
        }

        data.push_back(row);
    }

    return data;
}

int main() {
    std::vector<std::vector<std::string>> data = readCSV("data.csv");

    for (const auto& row : data) {
        for (const auto& cell : row) {
            std::cout << cell << " ";
        }
        std::cout << std::endl;
    }

    return 0;
}