Answer to Question #184066 in C++ for Bilal

Question

Comment this code line by line

Comment each line and said why we use

 
#include <iostream>
 
#include <vector>
 
#include <stdlib.h>
 
#include <cmath>
 
using namespace std;
 
 
 
class RightAngleTriangle{
 
private:
 
    vector<int> Point2DA, Point2DB, Point2DC;
 
    float AC,AB,BC;
 
public:
 
    RightAngleTriangle(){}
 
 
 
    void Input(){
 
        int X;
 
        int Y;
 
        cout<<"Enter X coordinate for point A: ";
 
        cin>>X;
 
        cout<<"Enter Y coordinate for point A: ";
 
        cin>>Y;
 
        Point2DA.push_back(X);
 
        Point2DA.push_back(Y);
 
 
 
        cout<<"Enter X coordinate for point B: ";
 
        cin>>X;
 
        cout<<"Enter Y coordinate for point B: ";
 
        cin>>Y;
 
        Point2DB.push_back(X);
 
        Point2DB.push_back(Y);
 
 
 
        cout<<"Enter X coordinate for point C: ";
 
        cin>>X;
 
        cout<<"Enter Y coordinate for point C: ";
 
        cin>>Y;
 
 
        Point2DC.push_back(X);
 
        Point2DC.push_back(Y);
 
 

Answer 1

#include <iostream> //library for input, output
 
#include <vector> //library for using vector
 
#include <stdlib.h> //the header file defines several general purpose functions
 
#include <cmath> //Header declares a set of functions to compute common mathematical operations and transformations
 
using namespace std; //a group of functions that are part of the std standard library
 
 
 
class RightAngleTriangle{ //class declaration
 
private: //declaring class members with private access
 
    vector<int> Point2DA, Point2DB, Point2DC;//declaration of three variables (class members) of type vector integer
 
    float AC,AB,BC; //declaration of three variables (class members) of float type
 
public:
 
    RightAngleTriangle(){} //public default constructor
 
 
 
    void Input(){//input method
 
        int X; //declaration of variable X 
 
        int Y;//declaration of variable Y
 
        cout<<"Enter X coordinate for point A: "; //ask the user to enter the value X for A
 
        cin>>X; //write the entered value into the variable X
 
        cout<<"Enter Y coordinate for point A: ";//ask the user to enter the value Y for A
 
        cin>>Y; //write the entered value into the variable Y
 
        Point2DA.push_back(X);//put the received data at the end of the vector Point2DA
 
        Point2DA.push_back(Y);//put the received data at the end of the vector Point2DA
 
 
 
        cout<<"Enter X coordinate for point B: ";//ask the user to enter the value X for B
 
        cin>>X;//write the entered value into the variable X
 
        cout<<"Enter Y coordinate for point B: ";//ask the user to enter the value Y for B
 
        cin>>Y;//write the entered value into the variable Y
 
        Point2DB.push_back(X);//put the received data at the end of the vector Point2DB
 
        Point2DB.push_back(Y);//put the received data at the end of the vector Point2DB
 
 
 
        cout<<"Enter X coordinate for point C: ";//ask the user to enter the value X for C
 
        cin>>X;//write the entered value into the variable X
 
        cout<<"Enter Y coordinate for point C: ";//ask the user to enter the value Y for C
 
        cin>>Y;//write the entered value into the variable Y
 
 
        Point2DC.push_back(X);//put the received data at the end of the vector Point2DC
 
        Point2DC.push_back(Y);//put the received data at the end of the vector Point2DC