Answer to Question #187520 in C++ for Jackie

Question

(third part)

 Open both file streams in main and pass them as parameters (must be a reference) to

a function that does all of the reading of the input, the calculations (using

FindAverage), and the writing of output. Thus your program will have 2 functions

other than main.

 Your program should not specify where the data files are located. Rather, use the

default location (which is where your .cpp file is located).

 When opening a file, always check to see if the open failed. If so, print an

appropriate error message and exit from the program.

 Note that you will have to have both the input and output files open for much of this

program.

Answer 1

#include <iostream>
#include <fstream>


using namespace std;


void readInput(ofstream myfile){
    if (myfile.is_open())  
      {  
        myfile << "Writing this to file.\n";  
        myfile.close();  
      }  
    else cout <<"The file failed to open."; 
}


void writeOutput(ifstream infile){
  string srg;  
   
  if (infile.is_open())  
  {  
    while ( getline (infile,srg) )  
    {  
      cout << srg <<endl;  
    }  
    infile.close();  
  }  
  else {  
      cout << "The file failed to open"<<endl;   
    }
}


int main()
{
    ofstream outfile;
    outfile.open ("example1.txt");
    
    ifstream inpfile; 
    inpfile.open("example2.text");
    
    readInput(outfile);
    writeOutput(inpfile);


    return 0;
}