More information would be useful.
But the simplest form:
#include <iostream>
#include <sstream>
#include <fstream>
#include <string>
int main()
{
std::ifstream data("plop.csv");
std::string line;
while(std::getline(data,line))
{
std::stringstream lineStream(line);
std::string cell;
while(std::getline(lineStream,cell,','))
{
// You have a cell!!!!
}
}
}
Also see this question: CSV parser in C++