First Program (Calculator)

Hey, everyone, I'm a beginner to all types of programming, so I figured I'd place my first original (i.e. completely solved by me) up for comments and criticisms. I'm mainly looking on how to make it more streamlined, as I decided I might as well learn to make efficient code as I'm learning the language. Anyway, the following is a simple calculator program. Also, and I apologize in advance if this is a stupid question, but is there a command in c++ that is similar to the ClrHome command in Visual Basic. I haven't been able to find it in any of the books I'm using. Thanks.

Code:

`/* ****************************************************************************`

This program takes two numbers as input, asks the user to choose a operator,

then displays the result.

******************************************************************************/

#include <iostream>

using namespace std;

int main()

{

//First we declare the variables we will use for calculations

long double x, y;

long double result;

int z; //This is the value we will use for the operator

//Next we get our values from the user and display them to verify

cout << "Please enter a number: \n";

cin >> x;

cout << "Please enter a second number: \n";

cin >> y;

cout << "\n" << "Your numbers are " << x << " and " << y << "\n";

cout << "\n";

//Next we display the possible operators

cout << "(1) Add \n";

cout << "(2) Subtract \n";

cout << "(3) Multiply \n";

cout << "(4) Divide \n";

cin >> z;

cout << "\n";

//Now we do the calculations

switch ( z )

{

case 1:

result = x + y;

break;

case 2:

result = x - y;

break;

case 3:

result = x * y;

break;

case 4:

result = x / y;

break;

default:

cout<<"Error, bad input, quitting\n";

break;

}

cout << "The result is " << result << "\n";

return 0;

}