csv.cpp

// Displaying comma-separated-value files

#include <algorithm>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>

int main(int argc, char** argv) {
    if (argc != 2) {
        std::cout << "Usage: " << argv[0] << " <filename.csv>" << std::endl;
        std::exit(EXIT_FAILURE);
    }

    std::ifstream fin(argv[1]);
    if (!fin.is_open()) {
        std::cout << "Can not open the file <" << argv[1] << ">" << std::endl;
        std::exit(EXIT_FAILURE);
    }

    std::string str;
    while (std::getline(fin, str)) {
        std::istringstream iss(str);
        std::string token;
        while (std::getline(iss, token, ',')) {
            // remove extra junk (punctuation etc)
            token.erase(std::remove_if(token.begin(), token.end(),
                                       [](char& c) {
                                           // return !isalnum(c);
                                           // return !isdigit(c);
                                           return c ==
                                                  ' '; // remove extra spaces
                                       }),
                        token.end());
            std::cout << token << " ";
        }
        std::cout << std::endl;
    }
}