Program C++ menghitung jarak titik A(x1,y1) dan B(x2,y2)

Algoritma :

Deskripsi

AB               : float

x1,x2,y1,y2     : float

Deklarasi

AB = sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2))

write (a,b)

Berikut programnya :

#include <iostream.h>

#include <conio.h>

#include <math.h>

class jarak {

friend istream& operator >> (istream&, jarak&);

friend ostream& operator << (ostream&, const jarak&);

public:

jarak();

void hitung(){

     AB = sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2));

};

private:

    float x1,y1,x2,y2;

    float AB;

};

jarak::jarak(){

cout << "mencari jarak antara titik A(x1,y1) dan B(x2,y2)\n" << endl;

}

istream& operator >>(istream& cin, jarak& masukan){

   cout << "Nilai titik A " <<endl;

   cout << "Masukkan nilai x1 : ";   cin >> masukan.x1;

   cout << "Masukkan nilai y1 : ";   cin >> masukan.y1;

   cout << "Nilai titik B " <<endl;

   cout << "Masukkan nilai x2 : ";   cin >> masukan.x2;

   cout << "Masukkan nilai y2 : ";   cin >> masukan.y2;

   cout<<endl;

return cin;

}

ostream& operator << (ostream& out, const jarak& keluaran)

{

  out<< "jarak antara titik tersebut adalah : " <<keluaran.AB<<endl;

return out;

}

void main(){

jarak titik;

cin>>titik;

titik.hitung();

cout<<titik;

getch();

}

Explanation:
In this program just like the program to find the midpoint of the program but find the distance between two points is point A (x1, y1) and point B (x2, y2). Here also using variable x1, x2, y1 and y2 but the difference only variable AB. To find the distance of two points by using the formula  AB = sqrt ((x1-x2) ² + (y1-y2) ²). After getting input from the user initializes the program will work with the formula specified in the program.