unable to understand this typedef

[Sanchit]

What does this typedef represent?
typedef void Sigfunc(int);



-Sanchit

 

[Eric Sosman]

What does this typedef represent?
typedef void Sigfunc(int);

It declares Sigfunc as an alias for "function of one
int argument returning no value."

You can't actually use Sigfunc to define a function:

Sigfunc func ... er, where's my parameter list?
{
... er, how do I refer to the parameters?

... er, what do I return? it looks like I
should return a function, but ...?
}

However, you *can* use it to declare a function:

Sigfunc sig1; /* sig1 is a function ... */
Sigfunc sig2; /* sig2 is a function ... */

And you can use it to describe a function pointer:

Sigfunc *fptr = sig1;