Can I use keyword “var” in function (method)?

Question

The “var” keyword is universal keyword for each type, but I can’t change a type –
I now. But can I use this keyword in arguments of method, for example:

using System;
...
public string GetSum(var num)
{
return num.ToString() + " + 3 = " + (Int32.Parse(num) + 3);
}
...
byte a = 3; GetSum(a);
Int32 b = 4; GetSum(b);

Answer 1

It's not valid,var is not really a type.

https://stackoverflow.com/questions/14281289/passing-type-var-into-a-method-in-c-sharp

Answer 2

Thank you for your answer. 😃