Oct 9th, 2013 at 12:33 AM

Sir, can u kindly please explain me the following line of codes that i have collected from a C++ project. I do understand quite a lot of the codes but bits and pieces of the codes are completely new and unknown to me. So my request is that can u please explain me the codes step by step. I will be grateful to you.

myTestDriver.h


#ifndef MYTESTDRIVER_H
#define MYTESTDRIVER_H

#include <string>
#include <fstream>
#include <iostream>

using namespace std;

class myTestDriver {
public:
    void initialize(string iFileName, string oFileName);
    void testRun();

private:
    string inputFileName;
    string outputFileName;
    ifstream inputFile;
    ofstream outputFile;
    bool CheckIfFileExist();
    string command;
    int commandCounter;
};

#endif // MYTESTDRIVER_H
______________________________________________________

myTestDriver.cpp


#include "myTestDriver.h"

void myTestDriver::initialize(string iFileName, string oFileName){
    inputFileName=iFileName;
    outputFileName=oFileName;
    commandCounter=0;
}
bool myTestDriver::CheckIfFileExist(){
    inputFile.open(inputFileName.c_str());
    outputFile.open(outputFileName.c_str());

    if(!inputFile){
    cout<<"The input file name provided is not found. Exiting.";
    return false;
    }
    return true;
}

void myTestDriver::testRun(){
    if(!CheckIfFileExist()){
    cout<< "Please check the ipnput and output file names before test running.";
    }
    inputFile>>command;
    while (command!="Quit"){
    cout<<"Command is: "<< command <<endl;
    if (command=="Hello"){
        outputFile<<commandCounter<<" : "<<"Hello";
    }
    commandCounter++;//Everytime this line is called the next line is parsed from inputFile
    inputFile>>command;
    }
}


______________________________________________

main.cpp

#include <iostream>
#include "myTestDriver.h"

using namespace std;

int main()
{
    string inputFileName;// creating a string type variable named inputFileName
    string outputFileName;// creating a string type variable named inputFileName
    cout<<"Enter input file name :"<<endl;
    cin>>inputFileName; // taking in the name for the input file name

    cout<<"Enter output file name :"<<endl;
    cin>>outputFileName;// taking in the name for the output file name

    myTestDriver driver;    // creating a myTestDriver object know as "driver"
    driver.initialize(inputFileName, outputFileName);  // calling the initialize function of the object
    driver.testRun(); //  calling the testrun method of the object

    return 0;
}