Arrays

[une]

Hey guys hipe you all doing good, I have a program that reads some numbers in a file, it needs to find the highest number, the lowst number, sum of numbers, and teh avferasge. I have coded the follwoing but it is not having the best reslutls. It finds the highest, average and sum but for lowest alwyas shows the first number in the file

#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
int main ()
{
    {
         ifstream inputFile;
         char fileName[20];
         cout << "Enter the filename  ";
         inputFile.open("numbers.txt");
         cout<<"\n";
         const int SIZE=100;
         int numbers [SIZE];
         int count =0;
         while (count<SIZE && inputFile>>numbers[count])
         count++;
         cout<<setprecision(2)<<fixed<<showpoint<<endl;
         cout<<"\nThese are all of the numbers in the file: ";
         for(int index=0;index<count;index++)
         cout<<numbers[index]<<" "<<endl;
         inputFile.close();
    }
    int count_highest=0;
    int greatest=0;
    const int SIZE=100;
    int numbers [SIZE];
    greatest=numbers[0];
    ifstream inputFile;
    inputFile.open("numbers.txt");
    while (count_highest<SIZE && inputFile>>numbers[SIZE])
 
    {
                 count_highest++;            
                 if(numbers[count_highest]>greatest)
                 greatest=numbers[count_highest];
    }
    inputFile.close();
    cout<<"\nThe highest number is: "<<greatest<<endl; 
    inputFile.open("numbers.txt"); 
    int count_lowest=0;
    int lowest;
    lowest = numbers[0];
    while (count_lowest<SIZE && inputFile>>numbers[SIZE])
    {
         count_lowest++;
         if (numbers[count_lowest] < lowest)
         lowest = numbers[count_lowest];     
    }
    cout<<"The lowest numbers is: "<<lowest<<endl;
    int tnum;
    double average, sum = 0;
    for(tnum = 0; tnum < SIZE; tnum++)
            sum += numbers[tnum];
    average = sum / SIZE;
 
    cout<<"The sum of numbers is "<<sum<<" and the average " <<average<<endl;    
    cout<<"There are total "<<tnum<<" numbers in the file."<<endl;
    system("pause");
    return 0;
}
 

let me know if yall can do anything about this

[horace1]

your loop looking for greatest exits when the inputFile>>numbers[SIZE] fails, i.e. you get an error condition. If you are going to use the same ifstream again you need to clear the error condition

    inputFile.close();
    inputFile.clear();
    inputFile.open("numbers.txt"); 
 

the open() does not automatically do so.
I also think your algorithm for finding greatest and lowest is not correct but you can check this with test data

[une]

the following dont have any effect in the loop, thats just where the loop takes numbers to compare

inputFile>>numbers[count]