[C++知识库]C++读取csv

C++读取csv

#include<sstream>
#include<fstream>
#include<vector>
#include<algorithm>
#include<string>
using namespace std;
int main()
{
    std::ifstream  infile("F:\\Qt\\untitled3\\data.csv");
    string line;
    vector<vector<double>>data;
    while (std::getline(infile,line)) {
        std::stringstream rows(line);
        string datai;
        vector<double> datarow;
        while(std::getline(rows,datai,','))
        {
            datarow.push_back(atof(datai.c_str()));
        }
        data.push_back(datarow);
    }
    for(int i = 0;i<data.size();i++)
    {
        for(int j = 0;j< data[0].size();j++)
            std::cout<<data[i][j]<<',';
        std::cout<<endl;

    }
    return 0 ;
}