Question

For example, printf in c can take any number of parameters like printf("%d %d %s %s...",a,b,c,d,...) and is documented as below

printf( const char *format [, argument]... );

How can I define such functions in C#?

Answer 1

Using the params keyword:

void WriteAll(params object[] args) {
   for(int i = 0; i < args.Length; i++)
       Console.WriteLine(args[i]);
}

args will be an array with all the arguments you pass. Note that it must be the last formal argument.