Programming

Dear Mates,

I am trying to write a macro to replace with its arguments with singles quotes around each argument.

#define DECR(a,b,c,d,e) decr('a','b','c','d','e')

if the usage is

DECR(k,e,y,s,\0)

I want it to be replaced with the following

decr('k','e','y','s','\0')

However it getting replaced with the following

decr('a','b','c','d','e')

Please help me to find out what is wrong my macro.

Thanks in advance,
Tamil Pamaran

The solution isn't straight forward.

Code:

#define CH(x) #x[0]
#define DECR(a,b,c,d) decr( CH(a), CH(b), CH(c), CH(d) )

The two macros cause the satement

Code:

DECR( k, e, y, \0 );

to be converted to

Code:

decr( "k"[0], "e"[0], "y"[0], "\0"[0] );

The "x"[0] is functionally the same as 'x' and your desired invocation of decr():

Code:

decr( 'k', 'e', 'y', '\0' );

Thanks agama, That did the trick !!!