Question

The file that I am reading from contains data about cities. I am wondering how I can extract just the data I want and apply it to my city objects. Below is my city class.

    #include <iostream>
    #include <string>
    #include <cstdlib>
    #include "City.h"
    using namespace std;

    /*
     * Define the constructor for the class 
     */
    City::City(string city_name, string state, int longitude, int latitude, int population) {
        this->city_name = city_name;
        this->state     = state;
        this->longitude = longitude;
        this->latitude = latitude;
        this->population = population;
    }

    /*
     *Accessors
     */ 
    string City::getCity() { 
                return city_name; 
        }

    string City::getState() { 
            return state; 
        }

    int City::getLongitude() {
            return longitude;
        }

    int City::getLatitude() {
            return latitude;
        }

    int City::getPopulation() {
            return population;
        }

    /*
     * Mutators 
     */ 
    void City::setCity(string city_name) {
            this->city_name = city_name;
        }
    void City::setState(string state) {
            this->state = state;
        }
    void City::setLongitude(int longitude) {
            this->longitude = longitude;
        }
    void City::setLatitude(int latitude) {
            this->latitude = latitude;
        }
    void City::setPopulation(int population) {
            this->population = population;
        }


    /*
     * Sorting methods
     */
    void City::sortByCity() {
            // Code to sort cities by city name
    }

    void City::sortByLongitude() {
            // Code to sort cities by longitude
    }  

Here is an example of the type of text the file contains that I want to read from

1063061|OH|Tobias|ppl|Marion|39|101|404118N|0830359W|40.68833|-83.06639|||||985|||Monnett
1063062|OH|Todds|ppl|Morgan|39|115|393129N|0815049W|39.52472|-81.84694|||||983|||Stockport

My question is how do I exclude the ‘|’ characters from my file input stream? As well as how do I extract only the strings that I need. (Ex. Tobias as city_name or OH for state) in order to create my city objects. Thank You

Answer 1

use getline with delimiter character ‘|’ and write an inputting sequence adapted to your formatted input data

ifstream myfile ("input.txt");
string s;
getline (myfile,s,'|')