What is compile time?
Compile Time: In longer form, you might say, "at the time of
compiling", or, "when the program is compiled".
When you compile a program, the compiler applies various
processes to your source code in order to generate the executable
files. These are actions that happen "at compile time".
Other actions happen when you actually run the finished program.
These actions are said to occur, at, or in, "run time".