how to create a calculator in c# using if....elseif.....else
Answers
Hi mate!
is your answer
Answer:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace DecisionMaking2
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Calculator");
Console.WriteLine("----------------------------");
Console.WriteLine("1.Add");
Console.WriteLine("2.Substract");
Console.WriteLine("3.Multiply");
Console.WriteLine("4.Divide");
Console.Write("Enter Choice(1-4):");
int ch = Int32.Parse(Console.ReadLine());
int a, b, c;
if(ch==1)
{
Console.Write("Enter A:");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter B:");
b = Convert.ToInt32(Console.ReadLine());
c = a + b;
Console.WriteLine("Sum = {0}", c);
}
else if(ch==2)
{
Console.Write("Enter A:");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter B:");
b = Convert.ToInt32(Console.ReadLine());
c = a - b;
Console.WriteLine("Difference = {0}", c);
}
else if(ch==3)
{
Console.Write("Enter A:");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter B:");
b = Convert.ToInt32(Console.ReadLine());
c = a * b;
Console.WriteLine("Product = {0}", c);
}
else if(ch==4)
{
Console.Write("Enter A:");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter B:");
b = Convert.ToInt32(Console.ReadLine());
c = a / b;
Console.WriteLine("Quotient = {0}", c);
}
else
{
Console.WriteLine("Invalid Choice");
}
Console.ReadKey();
}
}
}