Whenever I run this program, I input a path to the file. Once I hit Enter a box comes up saying
"NumberAnalysis.exe has stopping working
A problem caused the program to stop working correctly.
Windows will close the program and notify you if a solution is available."

I give it a simple .txt file with some numbers separated by a line break.

Code:
#include <iostream>
#include <string>
#include <fstream>
#include <vector>
using namespace std;

int getLowest(vector<int> theVector);
int getHighest(vector<int> theVector);
int getTotal(vector<int> theVector);
int getAverage(vector<int> theVector);


vector <int> numArray;

int main(int argc, char *argv[]) {
    string filepath;
    cout<<"Please enter a file path."<<endl;
    cin>>filepath;
    ifstream theFile(filepath.c_str());
    if(!theFile.is_open())
         cout<<"File could not be opened!"<<endl;
    else {
         char x;
         int count = 0;
         while(theFile.get(x)) {
             numArray[count] = (int)x;
             count++;
         }
         cout<<"The lowest number here is "<<getLowest(numArray)<<"."<<endl;
         cout<<"The highest numer here is "<<getHighest(numArray)<<"."<<endl;
         cout<<"The total of the numbers are "<<getTotal(numArray)<<"."<<endl;
         cout<<"The average of the numbers is "<<getAverage(numArray)<<"."<<endl;
    }    
    cin.get();
    
}


int getLowest(vector<int> theVector) {
    int lowest = 100000000;
    for(int i=0;i < theVector.size();i++) {
            if(lowest > theVector[i]) 
                      lowest = theVector[i];
            }
    return lowest;
}

int getHighest(vector<int> theVector) {
    int highest = 0;
    for(int i=0;i < theVector.size();i++) {
            if(highest < theVector[i])
                       highest = theVector[i];
            }    
    return highest;
}

int getTotal(vector<int> theVector) {
    int total = 0;
    for(int i=0;i < theVector.size();i++) 
            total += theVector[i];
    return total;    
}

int getAverage(vector<int> theVector) {
    return (getTotal(theVector) / theVector.size());      
}
Any idea as to why this is happening? Or any website I can check out to see the problem?