Rounding Numbers - Thank You

[wendy001]

Hi all I'm new to the forum and new to C++. I have a problem that I solved but could not round it to a whole number as required. Can someone please help? I'd really appreciate it.


#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()

{
double area, diameterInInches, numberOfSlices, radius;

//This program calculates the number of slices in a pizza... Get the diameter in inches.
cout << "What is the diameter of the pizza in inches? ";
cin >>diameterInInches;

// calculate number of slices.
cout << "The number of slices in this pizza are: ";
radius = diameterInInches / 2;
area = 3.14 * pow(radius, 2);
numberOfSlices = area / 14.125;

cout << numberOfSlices << endl;

cout << endl;
system ("pause");
return 0;
}

[Duthomhas]

http://www.cplusplus.com/forum/articles/3638/

[wendy001]

I've seen that and tried to figure it out, but I do not know how to incorporate rounding numbers into my code. Do you know how?

Thank You for your quick response.

[Duthomhas]

Look through the article and code and use the rounding algorithm you need. If all you want is common rounding then use the roundhalfup() function.

Glad to be of help.

[wendy001]

I'm not sure how to use the code. I tried a few different options and failed. I provided the code above so that someone can incorporate "round up" into it, so that I can study what they did to the code and learn from it.

Thank You...