C++ ceil() Function: Ultimate Guide

In C++, the ceil function is a mathematical function used for rounding up. It takes a floating-point number as a parameter and returns the smallest integer value that is not less than that parameter.

For example, ceil(3.2) will return 4 and ceil(-2.8) will return -2.

The ceil function is useful for situations where rounding up is needed, such as calculating currency allocations or ceiling heights.