What will be the output of the following C# code?
static void Main(string[] args)
{
Program p = new Program();
p.display(2, 3, 8);
int []a = { 2, 56, 78, 66 };
Console.WriteLine(“example of array”);
Console.WriteLine(“elements added are”);
p.display(a);
Console.ReadLine();
}
public void display(params int[] b)
{
foreach (int i in b)
{
Console.WriteLine(“ARRAY IS HAVING:{0}”, i);
}
}
a) Compile time error
b) Run time error
c) Code runs successfully but prints nothing
d) Code runs successfully and prints given on console

Answer: d
Explanation: Object ‘p’ makes a call to invoke function display() and hence consecutively prints the output. Array ‘a’ is declared with elements again object ‘p’ makes a call to display() and hence, consecutively prints the output with given elements.
Output:
ARRAY IS HAVING:2
ARRAY IS HAVING:3
ARRAY IS HAVING:8
elements added are:
ARRAY IS HAVING:2
ARRAY IS HAVING:56
ARRAY IS HAVING:78
ARRAY IS HAVING:66