Question

Write a C++ program that reads the values from a data file til the end of the data file is reached. It displays the values read, and computes and displays the largest, smallest, and the average of these values

Answer 1

#include <iostream>
#include <fstream>

using namespace std;

int main () {
   int n;
   int largest, smallest, sum = 0, count = 0;
   
   string fileName;
   cout<<"Enter file name: ";
   cin>>fileName;
    
   ifstream myfile (fileName);
   if (myfile.is_open())
   {
      while (myfile >> n )
       {
          if(count == 0){
              largest = n;
              smallest = n;
          }
          if(largest < n){
              largest = n;
          }
          if(smallest > n){
              smallest = n;
          }
          sum += n;
          count += 1;
       }
       
       cout<<"largest = "<<largest<<endl;
       cout<<"smallest = "<<smallest<<endl;
       cout<<"average = "<<(1.0*sum/count)<<endl;
   }
   return 0;
}