information displayer

#include <iostream>
#include <fstream>
#include <string>
#include <cmath>
using namespace std;


// getting the file name.
string getFileInfo ()
{
    string dogo;
    string fileName;
    ifstream infile;
    while (!(dogo == "the price is right"))
    {
    cout << "Enter a file name: " << endl;
    cin >> fileName;
    infile.open (fileName);
    if ((infile))
    {
    break;
    }
    cout <<endl << "tis not possible." << endl;
}
// calculating the mean of all the numbers.
return fileName;
};

double calculateMean(string fileName)
{
    double mean;
    double dog;
    double seagull;
    mean = 0;
    ifstream infile;
    infile.open (fileName);
    while (infile)
    {
        infile >> seagull;
        dog = seagull + dog;

    }
    dog = dog - 34;
    mean = dog / 20;
    return mean;
};
// calculatoing the minimum of all the numbers.
int calculateMin(string fileName)
{

    int min;
    int seagull;
    int dog;
    ifstream infile;
    infile.open (fileName);
    infile >> seagull;
    while (infile)
    {
        infile >> dog;
        if (seagull > dog)
        {
            seagull = dog;
        }
    }
    min = seagull;
    return min;
}
// displaying the infomration gained.
void displayInfo(double mean, int min)
{
    cout << "The mean is:\t" <<  mean << endl;
    cout << "the min is:\t"<< min << endl;
};


int main()
{
// starting functions in main.
    string fileName = getFileInfo ();
    double mean= calculateMean(fileName);
    double min = calculateMin(fileName);
    displayInfo(mean, min);

    return 0;
}