CODEWITHSUNDEEP
c++
user7867434
user7867434

Reputation:

Macro to print to the visual studio debugger

I'm trying to write a simple macro to append a break line to it. Is it the right do this?:

#define DEBUG_PRINT(message, ...)   \
                message += "\n"; \
                _RPTN(0, message, __VA_ARGS__)

And to use:

DEBUG_PRINT("my messages %s %d", anotherString, someNumber)

Also for some reason the compiler doesn't accepts it with a message:
Cannot assign to an array type 'char const[theSizeOfTheString]'

Thanks for the answers in advance! :)

Upvotes: 0

Views: 294

Answers (1)

gflegar
gflegar

Reputation: 1613

If you know that message is going to be a constant string, you could do it like this:

#define DEBUG_PRINT(message, ...) _RPTN(0, message "\n", __VA_ARGS__)

For more details, see string literals at cppreference:

String literals placed side-by-side are concatenated at translation phase 6 (after the preprocessor). That is, "Hello," " world!" yields the (single) string "Hello, world!". If the two strings have the same encoding prefix (or neither has one), the resulting string will have the same encoding prefix (or no prefix).

Upvotes: 1

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