Using round() function for floats in C++ - Learn how | 50-80 characters

Learn How to Use the round() Function for Floats in C++

If you're working with floating-point numbers in C++, you'll likely need to round them at some point. Fortunately, the round() function makes this task easy. The round() function takes a floating-point number as an argument and returns the nearest integer value.

To use the round() function, you'll need to include the <cmath> header file. Here's an example:

#include <iostream>
#include <cmath>

int main() {
   float num = 3.14159;
   int rounded = round(num);

   std::cout << "The rounded value of " << num << " is " << rounded << std::endl;

   return 0;
}

In this example, we declare a floating-point variable called num and assign it the value of 3.14159. We then use the round() function to round this value to the nearest integer and store the result in an integer variable called rounded. Finally, we use std::cout to print out the original value of num and the rounded value of rounded.

And that's all there is to it! With the round() function, you can easily round floating-point numbers in your C++ programs.