lab0-c | C Programming Lab : Assessing Your C Programming Skills | Learning library

The proper way to prevent such errors is to avoid casts, use the proper types everywhere, and configure the compiler to produce more warnings (-Wall -Wextra) and to consider these warnings errors (-Werror).

If add_param expects a pointer to int, do not pass a pointer to something that is not compatible with type int.

If you want add_param to handle different types, you can define the valp argument as a pointer to void and pass the expected type with another argument, such as an appropriate setter function. You would explicitly bypass the compiler type checking mechanisms and be on your own if the program has semantic errors.

Here is an example: