What should be considered when rounding down in C++?

In C++, rounding down is typically achieved using the floor function from the standard library or through type conversion. When using these methods, it’s important to keep the following points in mind:

1. When using the floor function, the cmath header file needs to be included.
2. To round a floating-point number down, you need to cast it to an integer, but be aware of potential accuracy loss issues.
3. To round down an integer, simply use integer division directly, such as: int result = num / divisor.
4. When using type conversion, it is important to ensure that the converted data type is appropriate in order to avoid issues such as overflow or loss of precision.
5. When performing floor division, pay attention to overflow issues to avoid incorrect results due to exceeding the data type range.
6. When rounding down, it is important to take into account negative numbers to ensure the result meets expectations.