Question

Write a C++ program that open the text file “numbers.txt”.

(the numbers.txt looks like: ' 1. 6 8 ')

Have a “output.txt”

If summation of the numbers is bigger than 10, your code must write the first number inside “numbers.txt” in another file called “output.txt”.

(use conditional statement for comparison)

Answer 1

/*
 *  C++ Program for illustrating the concepts of file hndling
 */

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

int main()
{
  fstream ifile, ofile;
  ifile.open("numbers.txt", ios :: in);
  ofile.open("output.txt", ios :: out);

  int num1, num2, num3;

  ifile >> num1;
  ifile >> num2;
  ifile >> num3;

  if ((num1 + num2 + num3) > 10)
    ofile << num1;
  
  ifile.close();
  ofile.close();
  
  return 0;
}

/*  Program ends here */

Note: Please provide a complete file or more sets of input and output examples, I will test the code for them to ensure you or drop a comment for your queries.