Deafult Arguments

[sarvsav]

Hello Everyone,

How to create default arguments in C? Is there any way to make default arguments ( i mean any alternative for them).

[Salem]

The short answer is, you can't.

[tabstop]

The standard library occasionally uses 0 or NULL as "don't care"-type arguments, but there's no way to leave them off entirely.

[vart]

Standard approach will be having 2 functions

void Initialize(int a, int b, int c)
{
   InitializeEx(a,b,c,103);
}

void InitializeEx(int a, int b, int c, int d)
{
  //Do you work
}

And call the first when you want to leave parameter d of InitializeEx with default value

[sarvsav]

Seems to very similar to function overloading, but i like the trick. Thanks for the help.

Standard approach will be having 2 functions

void Initialize(int a, int b, int c)
{
   InitializeEx(a,b,c,103);
}

void InitializeEx(int a, int b, int c, int d)
{
  //Do you work
}

And call the first when you want to leave parameter d of InitializeEx with default value

[sarvsav]

By the way, i have used this: » Preprocessor magic: Default Arguments in C - Intelligent rumblings

May be helpful for someone else.

Cheers