Question

This is for a class in C++

Problem 1: A class Names reads the following names from the .txt file

Name.txt

[Insert a long list of first, middle and last names. Each set of names is placed on a different line like the following:

John Doe

Jane Doe

Johnie Boy

etc.]

Make a search directory using dynamic allocation (pointers) where the user would search the any number

of letters of the first name and the matching name/names would come up as output. (Marks 20)

Answer 1

#include <fstream>
#include <iostream>
#include <string>
#define MAX_NAMES 1000
using namespace std;

// Name class
class Name {
private:
  string fname;
  string lname;

public:
  // constructors
  Name() {}
  Name(string f, string l) {
    fname = f;
    lname = l;
  }
  // getter and setters
  string getFirstName() { return fname; }
  string getLastName() { return lname; }
  void setFirstName(string name) { fname = name; }
  void setLastName(string name) { lname = name; }
};

int main(int argc, char const *argv[]) {
  Name *names = new Name[MAX_NAMES];
  int count = 0;
  ifstream fin;
  // TODO: change the path of file
  string file_path = "Name.txt";
  fin.open(file_path, ios::in);
  if (!fin) {
    cout << "Error in opening file " << file_path << endl;
    exit(-1);
  }
  string f, l;
  // Reading line by line
  while (fin >> f >> l) {
    Name n(f, l);
    // adding to pointer array
    names[count++] = n;
  }
  string choice;
  while (1) {
    cout << "1. search name" << endl
         << "2. Exit\n"
         << "Enter Youe chioce : ";
    getline(cin, choice, '\n');
    if (choice == "1") {
      string temp;
      cout << "Enter first name : ";
      getline(cin, temp, '\n');
      cout << "\n------Names--------\n";
      // searching for name
      for (int i = 0; i < count; i++) {
        string fn = names[i].getFirstName();
        std::size_t index = fn.find(temp);
        if (fn.find(temp) != std::string::npos) {
          cout << names[i].getFirstName() << " " << names[i].getLastName()
               << endl;
        }
      }
      cout << endl;
    } else if (choice == "2") {
      exit(0);
    } else {
      cout << "invalid choice!\n";
    }
  }

  return 0;
}

//OUT

1. search name
2. Exit
Enter Youe chioce : 1
Enter first name : John

------Names--------
John Doe