read-quick-sort.cpp

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

struct Client {
    std::string account;
    std::string name;
    std::string weigth;
    std::string age;
};

int compare (const void * a, const void * b) {
    return ( *(int*)a - *(int*)b );
}

int main() {

    std::cout<<"\n\n";
    std::cout<<"Quick sort in C++\n\n";
    std::ifstream inFile("registration.txt");

    const int size = 5;
    int i = 0;
    Client clients[size];
    int accs[size];

    if (inFile.is_open()) {
        std::string line;
        while(std::getline(inFile,line)) {

            std::stringstream ss(line);
            std::getline(ss,clients[i].account,',');
            std::cout<<"\""<<clients[i].account<<"\"";

            std::getline(ss,clients[i].name,',');
            std::cout<<", \""<<clients[i].name<<"\"";

            std::getline(ss,clients[i].weigth,',');
            std::cout<<", \""<<clients[i].weigth<<"\"";

            std::getline(ss,clients[i].age,',');
            std::cout<<", \""<<clients[i].age<<"\"";

            accs[i] = std::stoi(clients[i].account);

            std::cout<<"\n";
            i = i + 1;
        }
    }

    std::cout<<"\n\n";
    std::cout<<"No sorted:\n";
    for (i=0; i<size; i++) printf ("%d ",accs[i]);

    std::cout<<"\n\n";
    std::cout<<"Quick sorted:\n";
    qsort (accs, size, sizeof(int), compare);
    for (i=0; i<size; i++) printf ("%d ",accs[i]);
    std::cout<<"\n\n";

    return 0;
}