What is ellipsis operator in c

c function ellipsis
Karandeep Singh picture Karandeep Singh · Sep 25, 2010 · Viewed 25.5k times · Source

Possible Duplicate:
What's does … mean in an argument list in C ? 

 function fun1(...)
    {
    }

Please tell me about what is the use and how to use ellipsis operator in c. Thanks,

Answer

Vijay Mathew picture Vijay Mathew · Sep 25, 2010

An ellipsis is used to represent a variable number of parameters to a function. For example:

void format(const char* fmt, ...)

The above function in C could then be called with different types and numbers of parameters such as:

format("%d-%d-%d", 2010, 9, 25);

and

format("product: %s, price: %f", "HDD", 450.90);

C99 introduced Variadic macros which also makes use of ellipsis.

Related questions

What is a "static" function in C?

The question was about plain c functions, not c++ static methods, as clarified in comments. I understand what a static variable is, but what is a static function? And why is it that if I declare a function, let's say …

Read More
How do you pass a function as a parameter in C?

I want to create a function that performs a function passed by parameter on a set of data. How do you pass a function as a parameter in C?

Read More
strdup() - what does it do in C?

What is the purpose of the strdup() function in C?

Read More