How to use Macro argument as string literal

Question

I am trying to figure out how to write a macro that will pass both a string literal representation of a variable name along with the variable itself into a function   For example given the following function   void do something string name  int val       cout  lt  lt  name  lt  lt        lt  lt  val  lt  lt  endl      I would want to write a macro so I can do this   int my val   5  CALL DO SOMETHING my val     Which would print out  my val  5  I tried doing the following    define CALL DO SOMETHING VAR  do something  VAR   VAR     However  as you might guess  the VAR inside the quotes doesn t get replaced  but is just passed as the string literal  VAR   So I would like to know if there is a way to have the macro argument get turned into a string literal itself

User · Answer

You want to use the stringizing operator    define STRING s   s  int main         const char   cstr   STRING abc     cstr     abc

User · Answer

Use the preprocessor   operator    define CALL DO SOMETHING VAR  do something  VAR  VAR

User · Answer

Perhaps you try this solution    define QUANTIDISCHI 6  define QUDI x   x  define QUdi x  QUDI x               unsigned char TheNumber      QUANTIDISCHI     QUdi QUANTIDISCHI    n

User · Answer

define NAME x  printf  Hello    x   main        NAME Ian      will print  Hello Ian

[c++] How to use Macro argument as string literal?

Examples related to c++

Examples related to c-preprocessor

Examples related to string-literals