Question

Your lab instructor will guide you through the steps necessary to set up this project in Visual Studio. Video instructions for people using other programs can be found here: XCode, Code::Blocks and repl.it.

• Using the lab samples as a starting point, write a program called lab4.cpp to input 10 float values from an input file input.txt.
  (Hint, you have to create the input.txt file yourself)
• Output the sum and the average of the 10 float values to an output file output.txt.
• Be sure to test to see if you opened the input and output files before you use them.
• Compile and run this C++ program.
• Run the program for your lab instructor and show the result in output.txt.

Answer 1

Given below is the code for the question. Please copy input.txt also. The program creates output.txt..
Please do rate the answer if it helped. Thank you.

input.txt
--------
14.1 58.7 14.1 52.9 39.0
54.1 79.0 69.0 99.1 29.1

main.cpp
-------
#include <iostream>
#include <fstream>

using namespace std;

int main()
{
   ifstream infile("input.txt");
   float sum = 0, avg = 0, num;
   int n = 0;
  
  
   if(!infile){
       cout << "Error: Could not open input.txt" << endl;
       return 0;
   }
  
   while(infile >> num){
       sum += num;
       n++;
   }
   infile.close();
  
   avg = sum / n;
  
  
   ofstream outfile("output.txt");
   outfile << "Sum = " << sum << endl;
   outfile << "Average = " << avg << endl;
   outfile.close();
  
   cout << "output.txt created" << endl;
   return 0;
}

output.txt
==========
Sum = 509.1
Average = 50.91