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

[defkult]

#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;
      }
}