There are two comments for C : // and / *. Let me introduce you to how to use them for debugging.
Write this:
// *
FUNC1 ()
....... specific code
// * /
Now func1 () is running normally because the program encounters // first, the * comment behind the Bank;
If you want to comment, FUNC1 (), just delete the first /, then compile first encounter / *, have been found
Next * / end comments.
This allows only one symbol to realize the frequently used debugging method.