static void Main(string[] args)
{
Calculator op = new Calculator();
start:
Console.Clear();
int inputchoice = 0;
double result = 0;
char userin = 'Y';
Console.WriteLine(" ---------CALCULATOR | By - Mohit Kumar ---------");
Console.WriteLine("\n1. Addition\n2. Subtraction\n3. Multiplication\n4. Division\n5. Exit");
do
{
try
{
Console.Write("\nEnter you choice: ");
inputchoice = int.Parse(Console.ReadLine());
if (inputchoice > 5)
{
Console.WriteLine("Wrong Choice!!!");
Thread.Sleep(1000);
goto start;
}
}
catch (Exception exp)
{
Console.WriteLine("Invalid Choice!!!");
Thread.Sleep(2000);
Console.Clear();
goto start;
}
switch (inputchoice)
{
case 1:
{
Console.WriteLine("-------Addtion-------");
result = op.Addition();
Console.WriteLine("Answer is: {0}", result);
break;
}
case 2:
{
Console.WriteLine("-------Subtraction-------");
result = op.Subtraction();
Console.WriteLine("Answer is: {0}", result);
break;
}
case 3:
{
Console.WriteLine("-------Multiplication-------");
result = op.Multiplication();
Console.WriteLine("Answer is: {0}", result);
break;
}
case 4:
{
Console.WriteLine("-------Division-------");
result = op.Division();
Console.WriteLine("Answer is: {0}", result);
break;
}
case 5:
{
break;
}
}
UserCh:
try
{
Console.Write("\nPress Y to continue or any other key to exit: ");
userin = char.Parse(Console.ReadLine());
if (userin == 'y' || userin == 'Y')
{
goto start;
}
}
catch (Exception exp)
{
Console.WriteLine("Wrong Input!!!");
goto UserCh;
}
} while (userin == 'Y' || userin == 'y');
Console.WriteLine("Thanks for using this calculator");
}
public static float Addition(float a, float b)
{
float res = Calculator.Addition(a, b);
return(res);
}