using System;

​

public class Program

{

    public static void Main()

    {

        string val = null;

        Console.WriteLine(Convert.ToInt32(val)); // Print 0

        // Ex 1 : Remove 3 lines below to execute Ex 2

        //FormatException -> 'Input string was not in a correct format.'

        string val1 = "786.78";

        Console.WriteLine(Convert.ToInt32(val1));

        // Ex 2 : Remove 3 lines below to execute Ex 3

        //OverflowException -> 'Value was either too large or too small for an Int32.’.

        string val2 = "786786786786";

        Console.WriteLine(Convert.ToInt32(val2)); 

        // Ex 3

        //InvalidCastException -> 'Invalid cast from 'Double' to 'Char'

        double val3 = 786.78;

        Console.WriteLine(Convert.ToChar(val3));

​

​

    }

}