Question

Write the non modular version of this solution. Start with the implementation provided in proj6-sequentialMain2.cpp and implement the functionality found in proj6-modularMain2.cpp. Name your source code proj6-sequentialMain3.cpp

proj6-sequentialMain2.cpp:

int main() {
  string name;
  int age;

  string choice = "yes";

  while( choice != "no" ) {
    cout << "What is your name? " << endl;
    getline( cin, name );

    cout << “How old are you? " << endl;
    cin >> age;  

    cout << "Your name is: " << name << endl;
    cout << "You are " << age << “ years old” << endl;

    cout << "Do you want to read in another person (yes/no)? " << endl;
    cin >> choice;
    cin.ignore(3, '\n');
  }

  return 0;
}

proj6-modularMain2.cpp:

void readPerson( istream &in, string &name, int &age ) {
  getline( in, name );
  in >> age;
  in.ignore(3, '\n');
}

void requestInfo( ostream &out ) {
  out << "Please enter your name followed by your age." << endl;
}

void writePerson( ostream &out, string name, int age ) {
  out << name << endl;
  out << age << endl;
}

string readAgain( ostream &out, istream &in ) {
  string choice;

  out << "Do you want to read in another person (yes/no)? " << endl;
  in >> choice;
  in.ignore(3, '\n');
  
  return choice;
}

int main() {
  string name, choice;
  int age;
  bool fileRead = false;
  ifstream pfile;
  ofstream opfile;

  cout << "Would you like to read the data from a file? " << endl;
  cin >> choice;
  cin.ignore(3, '\n');

  if( choice == "yes" ) {
    fileRead = true;
    pfile.open("iperson.txt");
    if( !pfile ) {
      cerr << "Can't open person.txt for read." << endl;
      return 1;
    }
  }

  opfile.open("operson.txt");

  choice = "yes";
  if( fileRead ) {
    readPerson( pfile, name, age );
    if( !pfile ) {
      choice = "no";
    }
  }

  while( choice != "no" ) {
    if( !fileRead ) {
      requestInfo( cout );
      readPerson( cin, name, age );
    }  

    writePerson( opfile, name, age );

    if( !fileRead ) {
      choice = readAgain( cout, cin );
    } else {
      readPerson( pfile, name, age );
      if( !pfile ) {
        choice = "no";
      }
    }
  }

  if( fileRead ) {
    pfile.close();
  }
  opfile.close();

  return 0;
}

Answer 1

C++ PROGRAM

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

int main() {//main
string name, choice,c;
int age;
bool fileRead = false;
ifstream pfile;
ofstream opfile;

cout << "Would you like to read the data from a file? " << endl;
cin >> choice;
cin.ignore(3, '\n');

if( choice == "yes" ) {
fileRead = true;
pfile.open("iperson.txt");
if( !pfile ) {
cerr << "Can't open person.txt for read." << endl;
return 1;
}
}

opfile.open("operson.txt");

choice = "yes";
if( fileRead ) {
pfile>>name;
pfile>>age;
if( !pfile ) {
choice = "no";
}
}
while( choice != "no" ) {//while loop
if( !fileRead ) {
cout<< "Please enter your name followed by your age." << endl;
cin>>name;
cin>>age;
}
opfile<< name << endl;
opfile<< age << endl;
if( !fileRead ) {
cout<< "Do you want to read in another person (yes/no)? " << endl;
cin>>choice;
} else {
pfile>>name;
pfile>>age;
if( !pfile ) {
choice = "no";
}
}
}
if( fileRead ) {
pfile.close();
}
opfile.close(); //close file
return 0;
}

iperson.txt

Harry 15
Smith 25
Rohan 39

operson.txt

jeet
29
Robert
24

OUTPUT