Void fun1 (int a,... );
Void fun2 (int, b... );

How to call in the fun1 func2?

The original ideas naive
Void fun1 (int a,... )
{
Fun2 (a,... );
}

O action!!!!!!

CodePudding user response:

# define debug_printf (FMT,... ) printf (FMT, # # __VA_ARGS__)

CodePudding user response:

@ stherix
, I am not function to define macro
I mean is:
# define FUNC (A,... Func1 (A, # # __VA_ARGS__)
Func1 need to uncertain parameters are passed to the function func2
Macro definition written
# define FUNC (A,... Func2 (A, # # __VA_ARGS__) is not very convenient
So want to transfer at a time

CodePudding user response:

refer to the second floor also didn't want to good XP response:

@ stherix
, I am not function to define macro
I mean is:
# define FUNC (A,... Func1 (A, # # __VA_ARGS__)
Func1 need to uncertain parameters are passed to the function func2
Macro definition written
# define FUNC (A,... Func2 (A, # # __VA_ARGS__) is not very convenient
So want to be a transfer

If you want to transfer function is (... ) the parameter
Should be can't do it

CodePudding user response:

Stdarg. H
Check to know

CodePudding user response:

Can only use macros, not directly between function calls

CodePudding user response:

C + +, uncertain parameter template can be done,

CodePudding user response:

Va_list

CodePudding user response:

Void fun1 (int a,... )
{
Va_list args.
Va_start (args, a);//get fun1 uncertain parameter list
Fun2 (a, args);//will fun1 uncertain parameter list as a parameter to the fun2,
}


Void fun2 (int a,... ) {
Va_list fun2_args;
Va_start (a, fun2_args);//get fun2 uncertain parameter list
Va_list fun1_args;
Fun1_args=va_arg (fun2_args va_list);//by fun2 indefinite reference list to fun1 uncertain parameter list
Int a=va_arg (fun1_args, int);//parsing fun1 uncertain parameters of the
A: printf (" % d ", a);//print parameter
}

Fun1 (1, 10);

//output is 10;
//this is feasible, I've tested, but doing so or not reasonable, I'm not sure, if you look at don't understand the words to say again,

CodePudding user response:

Pointer to the variable parameter function can't as function arguments?