Sometimes we may require a variable number of arguments to be passed to a
function. For example we may require a sum function which calculates the
total of the numbers passed to it no matter how many numbers are passed.
In C# we can use the Params keyword and pass variable no of arguments to a
function. It's much like using ParamArray in VisualBasic language. The syntax
of params arguments is:
params datatype[] argument name
Note that the argument passed using params argument should be an single
dimension array also it should be the last argument in the argument list for
the function.
The params parmeter can then be accessed as an normal array.
Example
class ParamsTest
{
static void Main()
{
System.Console.WriteLine(sum(2,3,4)); // Three Arguments Passed
System.Console.WriteLine(sum(10,20,30,40,50,60));//Six Arguments
}
static int sum(params int[] num)
{
int tot=0;
foreach(int i in num)
{
tot=tot+i;
}
return tot;
}
}
