Question

1. Write C++ code to:
   • Create a function called “ReadFile” that:
     • Accepts a filename as input
     • Opens the file for reading
     • Reads an integer from the file and returns it.
   • Create a main function that
     • Asks the user to input a file
     • Passes that file to the “ReadFile” function
     • Prints the returned integer to the screen
     • • Extra Credit:
         • Set a default argument of “intfile.txt” for the “ReadFile” function
         • Write an overloaded function of “ReadFile” that accepts two filenames and reads an int from the first and writes it to the other.
           

Answer 1

#include<iostream>
#include <fstream>
using namespace std;
int ReadFile(string name="infile.txt"){
 fstream inputFile;
 int num;
  //opening the file
 inputFile.open(name);
 //reading num
 inputFile >> num;
 //returning num
 return num;
}
int ReadFile(string name1,string name2){
   fstream inputFile;
   int num;
  //opening the file
 inputFile.open(name1);
 //reading num
 inputFile >> num;
 ofstream myfile(name2);
 //writing to file
 myfile<<num;
 myfile.close();
 return num;
}

int main(){
        cout<<ReadFile("infile.txt","outfile.txt");
}

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