How to make calculator in c# in 5 minutes
How to make calculator in c# in 5 minutes
Write a program which allows
any user to perform addition, subtraction, multiplication or division on two
numbers entered. And the program generates an error message in case of invalid
input of quantity or an operator.
Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Calculator
{
class Program
static void Main(string[] args)
{
int num, num1, num2;
float num3, num4, Result1;
int Result;
Console.WriteLine("\t\t*******welcome
Tlo The Calculator********\n");
Console.WriteLine("\t\t*******Enter
The Number What You Want\n");
Console.WriteLine("1..........For
Additon");
Console.WriteLine("2..........For
Subtraction");
Console.WriteLine("3..........For
Division");
Console.WriteLine("4..........Multiplication");
num = int.Parse(Console.ReadLine());
switch (num)
{
case 1:
{
Console.WriteLine("1..........For
Additon\n");
Console.WriteLine("Enetr The
First Number");
num1 = int.Parse(Console.ReadLine());
Console.WriteLine("Enetr The
second Number");
num2 = int.Parse(Console.ReadLine());
Result = (num1 +
num2);
Console.WriteLine("Result is
: "+Result);
break;
}
case 2:
{
Console.WriteLine("2..........For
Subtraction\n");
Console.WriteLine("Enetr The
First Number");
num1 = int.Parse(Console.ReadLine());
Console.WriteLine("Enetr The
second Number");
num2 = int.Parse(Console.ReadLine());
Result = num1 - num2;
Console.WriteLine("Result
is :
" + Result);
break;
}
Console.WriteLine("3..........For Division\n");
Console.WriteLine("Enetr The
First Number");
num3 = float.Parse(Console.ReadLine());
Console.WriteLine("Enetr The
second Number");
num4 = float.Parse(Console.ReadLine());
Result1 = num3 /num4;
Console.WriteLine("Result
is :
" + Result1);
break;
}
case 4:
{
Console.WriteLine("4..........Multiplication\n");
Console.WriteLine("Enetr The
First Number");
num1 = int.Parse(Console.ReadLine());
Console.WriteLine("Enetr The
second Number");
num2 = int.Parse(Console.ReadLine());
Result = num1 * num2;
Console.WriteLine("Result
is :
" + Result);
break;
}
default :
{
Console.WriteLine("\t\tInvalid
Input ");
}
break;
}
}
}
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