Write a code that analyses every publicly traded stock and list them in order from the best short term gain to the worse

#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <cmath>

using namespace std;

const int MAX_SYMBOL = 10;
const int MAX_NAME = 10;
const int MAX = 50;

struct stock
{
    string symbol;
    string name;
    string date;
    double open;
    double high;
    double low;
    double close;
    double previousClose;
    double change;
    double percentChange;
};

void getStockData(ifstream &file, stock[]);
void getStock(ifstream &file, stock &);
void swapStock(stock &, stock &);
void sortStock(stock [], int);
void printStock(ofstream &file, stock [], int);

int main()
{
    ifstream in;
    ofstream out;
    stock stockArr[MAX];
    int numOfStock;
    
    in.open("C:\\Users\\Dean\\Desktop\\CS\\CS