C++读取CSV文件及数据存入vector方法

#include 
#include 
#include 
#include 

int main() {
    std::ifstream file("data.csv");
    std::string line;

    if (!file.is_open()) {
        std::cerr << "无法打开文件！" << std::endl;
        return -1;
    }

    while (std::getline(file, line)) {
        // 处理每一行
        std::cout << line << std::endl;
    }
    file.close();
    return 0;
}

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

    if (!file.is_open()) {
        std::cerr << "无法打开文件: " << filename << std::endl;
        return data;
    }

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

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

struct Student {
    std::string name;
    int age;
    double score;
};

std::vector students;
// 在读取后转换
if (row.size() == 3) {
    Student s;
    s.name = row[0];
    s.age = std::stoi(row[1]);
    s.score = std::stod(row[2]);
    students.push_back(s);
}