Code check please

[Aerials]

I'm trying to make a prog that finds the area of a circle.
After asking the user the radius of the circle it should display the area after a calculation.
But the program wont display the final result. Why?

#include <iostream.h>
#include <conio.h>

int main()
{
int radius;
const double pi=3.14;
cout<<"Find the area of a circle!\n";
cout<<"Enter the radius of the circle you want to find the radius of(Works best with whole numbers): ";
cin>>radius;
cout<<"The area is: "<<(radius*pi);
getch();
return 0;
}

I'd appreciate if I could get help ASAP

[Technocrat]

#include <iostream.h>
#include <conio.h>

int main()
{
int radius;
const double pi=3.14;
cout << "Find the area of a circle!" << endl;
cout << "Enter the radius of the circle you want to find the radius of(Works best with whole numbers): ";
cin>>radius;
cout << "The area is: "<< (radius*pi) << endl;
getch();
return 0;
} 

[Aerials]

thx

[Technocrat]

Sure
Just remember to tell the iostream that you are done with a line from now on and you should be ok.

[Aerials]

[CornedBee]

endl does not only start a new line but also flushes the ouput buffer, so things are actually written to the screen.

[[Digital-X-Treme]]

cout<<"The area is: "<<(radius*pi);

The area of a circle is pi * r^2.

[Aerials]

oops

[CornedBee]

but in this case, you shouldn't do pi^2 but rather pi*pi (it's faster)

[Lord_Rat]

That would be pi*r*r right?

[[praetorian]]

yepp, correct