Check entered address range is valid

Hey

I would like to know how to check whether a user specified start address and end address (for data locations) is valid or not

Is there a way to check the given address is actually part of the program?

I have malloc-ed to a variable, so would the correct method be to check whether the user inputted address is within that variable's scope?

Thanks

Err... why would be user be providing an object's address as input?

I want to be able to write the values from a start address to the given end address to a file.

So the value starting at for example, *(hex+10) can be the first value written, to *(hex+20) when in reality the data starts from *(hex)

So I just need to either check the address provided is within the program's allocation and that its within the hex malloc

Sounds like you should be writing offsets instead, e.g., 10 and 20.

cheers :)