Answer to Question #222046 in C++ for Subham

Question

Define a class named ‘Train’ representing following members:

Data members :- - Train Number

- Train Name

- Source

- Destination

- Journey Date

- Capacity

Member functions:

- Initialise members

- Input Train data

- Display data

Write a C++ program to test the train class.

Answer 1

#include <iostream>
#include <string>
#include <ctime>
using namespace std;


class Train {
public:
    Train();
    void SetName(string nm) { name = nm; }
    void SetSource(string src) { source = src; }
    void SetDestination(string dst)  {destination = dst; }
    void SetData(int yr, int m, int d);
    void SetCapacity(unsigned int c) { capacity = c; }
    void Display();


private:
    string name;
    string source;
    string destination;
    tm date;
    unsigned int capacity;
};


Train::Train() {
    name = "N/A";
    source = "Unknown";
    destination = "Unknown";
    capacity = 0;
    date.tm_year = 0;
    date.tm_mon = 0;
    date.tm_mday = 1;
}


void Train::SetData(int yr, int m, int d) {
    if (yr > 100) {
        date.tm_year = yr - 1900;
    }
    else {
        date.tm_year = 100 + yr;
    }
    if (m >=1 && m <= 12) {
        date.tm_mon = m-1;
    }
    else {
        date.tm_mon = 0;
    }
    if (d >=1 && d<= 31 ) {
        date.tm_mday = d;
    }
    else {
        date.tm_mday = 1;
    }
}


void Train::Display() {
    char buf[80];
    cout << "Train:        " << name << endl;
    cout << "From:         " << source << endl;
    cout << "To:           " << destination << endl;
    strftime(buf, 80, "%D", &date);
    cout << "Journay Date: " << buf << endl;
    cout << "Capacity:     " << capacity<< endl << endl;
}


int main() {
    Train train;
    train.SetName("Polar Express");
    train.SetSource("Whitehorse");
    train.SetDestination("Skagway");
    train.SetData(2021, 8, 12);
    train.SetCapacity(120);

    train.Display();
}