How to pass string argument in string macro in c

Question

Say i have macro with x as string parameter #define a(x) "this is x". And if I call as a(test) , string formed should be "this is test".

Thanks for reply.but if argument is in between the string say "this is x macro"? — user2432533
– user2432533, Commented Dec 19, 2016 at 3:09

sjsam · Accepted Answer · 2016-12-19 03:40:02Z

12

You're looking forward to create strings from macro argument and so, are looking for # operator. Within the replacement part of a function-like macro, the # symbol becomes a preprocessing operator that converts tokens into strings. So you need

#define a(x) "this is " #x

or

#define a(x) "this is " #x " in the middle."

answered Dec 19, 2016 at 3:40

sjsam

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