[C++]Some math calculator I used in Highschool.

#include <math.h>

#include <iostream>



using namespace std;



int main()

{

      int x1,x2,y1,y2,answer,answerx,answery;

      double distance;

      char choice;

      

      cout << "Menu:\nm = Midpoint\nd = Distance\ns=Slope\np=Slope Point\n";

      cin >> choice;

      while(choice != 'x')

      {



       if(choice == 'm')

       {

         cout << "Enter the X1 coordinate: ";

         cin >> x1;

         cout << "Enter the Y1 coordinate: ";

         cin >> y1;

         cout << "Enter the X2 coordinate: ";

         cin >> x2;

         cout << "Enter the Y2 coordinate: ";

         cin >> y2;

         answerx = (((x1) + (x2))/2);

         answery = (((y1) + (y2))/2);

         printf("The Midpoint is : (%i,%i)\n",answerx,answery); 

       }

       if(choice == 'd')

       {

         cout << "Enter the X1 coordinate: ";

         cin >> x1;

         cout << "Enter the Y1 coordinate: ";

         cin >> y1;

         cout << "Enter the X2 coordinate: ";

         cin >> x2;

         cout << "Enter the Y2 coordinate: ";

         cin >> y2;

        

         distance = sqrt(pow(x2-x1,2) + pow(y2-y1,2));

         printf("The Distance is: %i\n",distance);

       }

       if(choice == 's')

       {

	    cout << "Enter The X1 Coordinate: ";

	    cin >> x1;

	    cout << "Enter The Y1 Coordinate: ";

	    cin >> y1;

	    cout << "Enter The X2 Coordinate: ";

	    cin >> x2;

	    cout << "Enter The Y2 Coordinate: ";

	    cin >> y2;

	    printf("M = %i - %i / %i - %i\n",y2,y1,x2,x1);

       }

       if(choice == 'p')

       {

	    cout << "Enter The Y Coordinate: ";

	    cin >> y1;

	    cout << "Enter The X Coordinate: ";

	    cin >> x1;

        printf("y - %i = m(x - %i)\n",y1,x1);

       }

       system("Pause");

       break;

      }

}