C# Sample Programs

Build a simple calculator using c# programming language. The calculator should have the following features.
1. Adding 2 Numbers
2. Subtracting 2 Numbers
3. Multiplying 2 Numbers
4. Dividing 2 Numbers

Also, the program should run as long as the user wants it to be running.

using System;
namespace SamplePrograms
{
class SimpleCalculator
{
public static void Main()
{
string UserSelection = string.Empty;
do
{
PrintMenu();
int UserChoice = Convert.ToInt32(Console.ReadLine());
while (UserChoice < 1 || UserChoice > 4)
{
Console.WriteLine("Invalid Option. Try again");
PrintMenu();
Console.WriteLine();
UserChoice = Convert.ToInt32(Console.ReadLine());
}
Calculate(UserChoice);

Console.WriteLine("Do you want to continue");
UserSelection = Console.ReadLine();
while (UserSelection.ToUpper() != "NO" &&
UserSelection.ToUpper() != "YES")
{
Console.WriteLine();
Console.WriteLine("Invalid Input - Please type YES or NO");
Console.WriteLine("Do you want to continue");
UserSelection = Console.ReadLine();
}
}
while (UserSelection.ToUpper() != "NO");
Console.WriteLine();
Console.WriteLine("The program will now terminate");
}

public static void PrintMenu()
{
Console.WriteLine();
Console.WriteLine("Select your option");
Console.WriteLine("------------------");
Console.WriteLine("1. Addition");
Console.WriteLine("2. Subtraction");
Console.WriteLine("3. Multiplication");
Console.WriteLine("4. Division");
Console.WriteLine();
}

public static void Calculate(int SelectedOption)
{
int Result = 0;
Console.WriteLine("Enter your first number");
int FirstNumber = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter your second number");
int SecondNumber = Convert.ToInt32(Console.ReadLine());
Console.WriteLine();

switch (SelectedOption)
{
case 1:
Result = FirstNumber + SecondNumber;
Console.WriteLine("{0} + {1} = {2}", FirstNumber, SecondNumber, Result);
break;
case 2:
Result = FirstNumber - SecondNumber;
Console.WriteLine("{0} - {1} = {2}", FirstNumber, SecondNumber, Result);
break;
case 3:
Result = FirstNumber * SecondNumber;
Console.WriteLine("{0} * {1} = {2}", FirstNumber, SecondNumber, Result);
break;
case 4:
Result = FirstNumber / SecondNumber;
Console.WriteLine("{0} / {1} = {2}", FirstNumber, SecondNumber, Result);
break;
}
}
}
}

1 comment:

UnknownApril 6, 2016 at 7:18 AM
using System;

namespace Learning
{
class Program
{
static void Main()
{
int a, b , Result;
Console.WriteLine("Welcome To My Calculator [Two Numbers]");
Console.WriteLine("Operations\n1-Sum\n2-Sub\n3-Multi\n4-Div");
Console.WriteLine("Choose Your Operation");
int x = int.Parse(Console.ReadLine());
if (x == 1)
{
Console.Write("Enter First Number:\n");
a = int.Parse(Console.ReadLine());
Console.Write("Enter Secound Number:\n");
b = int.Parse(Console.ReadLine());
Result = a + b;
Console.WriteLine("Result: {0}", Result);
}

else if (x == 2)
{
Console.Write("Enter First Number:\n");
a = int.Parse(Console.ReadLine());
Console.Write("Enter Secound Number:\n");
b = int.Parse(Console.ReadLine());
Result = a - b;
Console.WriteLine("Result: {0}", Result);
}
else if (x == 3)
{
Console.Write("Enter First Number:\n");
a = int.Parse(Console.ReadLine());
Console.Write("Enter Secound Number:\n");
b = int.Parse(Console.ReadLine());
Result = a * b;
Console.WriteLine("Result: {0}", Result);
}
else if (x == 4)
{
Console.Write("Enter First Number:\n");
a = int.Parse(Console.ReadLine());
Console.Write("Enter Secound Number:\n");
b = int.Parse(Console.ReadLine());
if (b == 0)
{
Console.WriteLine("Secound Number Cannot be =0");

}
else
{
Result = a / b;
Console.WriteLine("Result: {0}", Result);
}
}
else
Console.WriteLine("NOT AN AVAILABLE OPTION");
Console.WriteLine("Thank You");

}

}

}