Thread: Area and volume of cylinder

Hello friends,
I would like to calculate area and volume of cylinder but radious and height should be integer, float and double. How can i do?
May you help me?
Thank you.

The volume is:

[code]
3.142 x (radius x radius) x height
[code]

What about a couple of floats for the radius and height values.

Code:

#include <iostream>

int main ()
{
    float radius;
    float height;
    
    std::cout << "Enter radius: ";
    std::cin >> radius;
    std::cout << "Enter height: ";
    std::cin >> height;
    
    //now you have radius and height stored, output the result here using your calculation
}

Not sure where you would need integer values unless you're only using whole numbers.

[QUOTE=grumpy;1160511]Note that pi is an irrational number (i.e. it cannot be computed exactly as a ratio of two integers). 3.142 is only an approximation. A more accurate approximation may be needed, depending on what precision of results are required.[/QUOTE

My friends radious and height will enter from keyboard. I think i am using lots of codes. Thers should be easy way. Input number can be integer, float or double.

Also in your code you did height and radious as a float. What if i enter as integer program how should understand.

Thanks

Laserlight, you are looking more than me from my questions you jelious me

If you use an integer, if your friend types in 3.57 for the radius, it will be saved as 3, which will give you an inaccurate result.

I used PI as 3.142 as an approximation as grumpy said. Press the symbol for this on your calculator and see what the real number is.

As far as 'easy way' goes, there is one, and the answer is within this thread

Originally Posted by grumpy

I use my calculator all the time!

What i am saying what you are talking hahaha))
Your comments out of subject.
If you dont have knowledge please dont spend time meaningles.