C function memory allocation -

At which time is the function allocated and where in memory?

Is the program allocated to memory for the function allocated when the first program is compiled or the function call is viewed for the first time? Is this stack or allocated in a code segment?

Memory is always assigned to the C function, code sections are loaded into memory at the time of the work If a function is related to a dynamically linked library, the program may load and load it on uncontrolled timing.