ConsoleApp__ClaculateTwoNumberWithYourOperator/Calculator.cs at master · Akbar-Azadi/ConsoleApp__ClaculateTwoNumberWithYourOperator · GitHub

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp20
{
    public class Calculator
    {
        public double Calcute(double First, string myoperator, double Second)
        {
            double result = -1;
            switch (myoperator)
            {
                case "+":
                    result = First + Second;
                    break;
                case "*":
                    result = First * Second;
                    break;
                case "-":
                    result = First - Second;
                    break;
                case "/":
                    result = First / Second;
                    break;
            }
            return result;
        }
    }
}