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

namespace Calcuator
{
    class Figure
    {
        protected int _numOne;
        private string _str1;

        protected string Str1
        {
            get { return _str1; }
            set { _str1 = value; }
        }
        public int NumOne
        {
            get { return _numOne; }
            set { _numOne = value; }
        }
        protected int _numTwo;
        private string _str2;

        public string Str2
        {
            get { return _str2; }
            set { _str2 = value; }
        }
        public int NumTwo
        {
            get { return _numTwo; }
            set { _numTwo = value; }
        }
        protected char _character;
        public char Character
        {
            get { return _character; }
            set { _character = value; }
        }
        public void InPut()
        {
            NumOne = Convert.ToInt16(Console.ReadLine());//Convert.Int()里必须是数字
            Character = Convert.ToChar(Console.ReadLine());
            NumTwo = Convert.ToInt16(Console.ReadLine());
            Console.WriteLine("=");
        }
        public string Link()
        {
            Str1 = Console.ReadLine();
            Character = Convert.ToChar(Console.ReadLine());
            Str2 = Console.ReadLine();
            if (Character == '+')
            {
                Str1 += Str2;
                return Str1;
            }
            else if (Character == '-')
                return Str1 = Str1.Replace(Str2, "");
            else
                return "字符串错误";
        }
        public double Count()
        {
            if (Character == '+')
            {
                return NumOne + NumTwo;
            }
            else if (Character == '-')
            {
                return NumOne - NumTwo;
            }
            else if (Character == '*')
            {
                return NumOne * NumTwo;
            }
            else if (Character == '/')
            {
                double d = (double)NumOne / NumTwo;
                return d;
            }
            else return -1;
        }
        public bool Equals(int a, int b)
        {
            if (a == b)
                return true;
            else
                return false;
        }
    }
}