C: Undefined Function Not Added | Together Java | Page 1

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@clear tulip has a question:

_skepticc

Question , In C , undefined function which is not called . is not added into object files right ?!

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<@&987246964494204979> please have a look, thanks.

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TJ-Bot

Question , In C , undefined function which is not called . is not added into object files right ?!

In C, if a function is declared but not defined or called in the code, it will not be added to the object files. This is because the compiler only includes functions that are actually used in the program during the linking phase.

When a function is declared but not defined or called, it means that there is no implementation provided for that function. As a result, the compiler will not be able to generate machine code for it and therefore will not include it in the object files.

This can lead to linker errors if the function is later called in the program but not implemented. In such cases, you will receive an "undefined reference" error during linking because the function definition is missing.

To avoid this issue, make sure to provide implementations for all declared functions in your C code. If a function is no longer needed, consider removing its declaration altogether to prevent any confusion or errors during compilation and linking.

#C: Undefined Function Not Added