#pragma once

#include "targetver.h"

#include <stdio.h>
#include <tchar.h>
#include <iostream>
#include <time.h>
#include <Windows.h>
#include <stdlib.h>

using namespace std;

#include "stdafx.h"

void privetstvie();

int init();
int init2();
int chislo(int mass[9]);

int summa(int a, int b);
int raznitsa(int a, int b);
int ymnozhenie(int a, int b);
float delenie(int a, int b);
int stepen(int a, int b);

void error();
void print2(int a);
void print2(float a);

int _tmain()
{
     privetstvie();
     int mass[9] = { 0 };
     int mass2[9] = { 0 };
     int deistvie = 0;
     for (;;){
        for (int i = 0; i < 9; i++){
           mass [i]= init();
           if (mass [i]== 43 || mass [i]== 42 || mass [i]== 47 || mass [i]== 45 || mass [i]== 94 || mass [i]== 32){
              deistvie = mass[i];
              break;
           }
        }

        if (deistvie == 32){
           exit(0);
        }

        int ch1 = chislo(mass);

        printf("%c", deistvie);
        for (int i = 0; i < 9; i++){
           mass2 [i]= init2();
           if (mass2 [i]== 61){
              break;
           }
        }
        int ch2 = chislo(mass2);
        cout << "=";
        int sum = summa(ch1, ch2);
        int minus = raznitsa(ch1, ch2);
        int ymnozh = ymnozhenie(ch1, ch2);
        int stepen2 = stepen(ch1, ch2);
        float delen = delenie(ch1, ch2);
        switch (deistvie)
        {
        case 43:
           print2(sum);
           break;
        case 45:
           print2(minus);
           break;
        case 47:
           if (delen != 0)
              print2(delen);
           if (delen == 0)
           cout << "Error! 2-e chislo = 0." << endl;
           break;
        case 42:
           print2(ymnozh);
           break;
        case 94:
           print2(stepen2);
           break;
        default:
           error();
           break;
        }
     }
     return 0;
}

void privetstvie(){
     cout << "Dobro pozhalovat' v kal'kylyator!" << endl<<"Dlya zaversheniya nazhmite probel."<<endl;
}

int init(){                    //первая группа числ
     int a = 0;
     int key = _gettch();
     if (key == 27){
        a = 0;
     }
     else if (key == 43 || key == 42 || key == 47 || key == 45 || key == 94 || key == 32){                     //проверка на нажатие клавиш действия
        a = key;
     }
     else if (key == 48 || key == 49 || key == 50 || key == 51 || key == 52                     //проверка на нажатие клавиш с цифрами
        || key == 53 || key == 54 || key == 55 || key == 56 || key == 57){     
        a = key;
        int b = a - 48;
        cout << b;
     }
     return a;
}
int init2(){                    //вторая группа числ
     int a = 0;
     int key = _gettch();
     if (key == 61){                    //проверка на нажатие =
        a = key;
     }
     else if (key == 48 || key == 49 || key == 50 || key == 51 || key == 52                     //проверка на нажатие клавиш с цифрами
        || key == 53 || key == 54 || key == 55 || key == 56 || key == 57){
        a = key;
        int b = a - 48;
        cout << b;
     }
     return a;
}
int chislo(int mass[9])
{
     int mass1[9] = {0};
     int chislo = 0;
     int k = 0;                    //счетчик положения арифметической операции
     int i = 0;
        for (i = 0; i < 9; i++){               //преобразование аски значений в числа
           if (mass [i]== 48 || mass [i]== 49 || mass [i]== 50 || mass [i]== 51 || mass [i]== 52                    
              || mass [i]== 53 || mass [i]== 54 || mass [i]== 55 || mass [i]== 56 || mass [i]== 57)
           {
              mass [i]= mass [i]- 48;
                
           }

        }

        for (int j = 0; j < 9; j++){               //определение положения арифметической операции
           if (mass[j]>9){
              break;
           }
           else{
              k++;
           }
          
        }
        for (int j = 0; j < k; j++){         //присвоение значения значения оригинального массива временному
           mass1 [j]= mass[j];
        }
          
        switch (k){               //присвоение значения переменной на основании положения арифметической операции
           case 1:
              chislo = mass1[0];
              break;
           case 2:
              chislo = mass1[0] * 10 + mass1[1];           
              break;
           case 3:
              chislo = mass1[0] * 100 + mass1[1] * 10 + mass1[2];           
              break;
           case 4:
              chislo = mass1[0] * 1000 + mass1[1] * 100 + mass1[2] * 10 + mass1[3];           
              break;
           case 5:
              chislo = mass1[0] * 10000 + mass1[1] * 1000 + mass1[2] * 100 + mass1[3] * 10 + mass1[4];           
              break;
           case 6:
              chislo = mass1[0] * 100000 + mass1[1] * 10000 + mass1[2] * 1000 + mass1[3] * 100 + mass1[4] * 10 + mass1[5];
              break;
           case 7:
              chislo = mass1[0] * 1000000 + mass1[1] * 100000 + mass1[2] * 10000 + mass1[3] * 1000 + mass1[4] * 100 + mass1[5] * 10 + mass1[6];
              break;
           case 8:
              chislo = mass1[0] * 10000000 + mass1[1] * 1000000 + mass1[2] * 100000 + mass1[3] * 10000 + mass1[4] * 1000 + mass1[5] * 100 + mass1[6] * 10 + mass1[7];
              break;

       
        default:
           break;
        }
       
       
           return chislo;
     }

int summa(int a, int b){
     return  a + b;
}
int raznitsa(int a, int b){
     return a - b;
}
int ymnozhenie(int a, int b){
     return a*b;
}
int stepen(int a, int b){
     int st = 1;
     if (a == 1 || b == 0){
        st = 1;
     }
     else{
        for (int i = 1; i <= b; i++){
           st = st*a;
        }
     }
     return st;
}
float delenie(int c, int d){
     if (d != 0)
     {
        return (float) c / d;
     }
     else{
        return 0;
     }
}

void error(){                           //пока не используется
     cout << "error" << endl;
}              
void print2(int a){
     printf("%d\n", a);
}
void print2(float a){
     printf("%.2f\n",  a);
}

#include "stdafx.h"
#include <iostream>
#include <windows.h>
#include <tchar.h>
#include <string>
#include <stdlib.h>
using namespace std;
int glob=0;
int chislo()
{
        
      int temp;
      int a = 0;
      string b;
      while (true)
      {
          a = _gettche();
          if (a == 32)
          {
              break;
                 
          }
          if (a == 42 || a == 43 || a == 45 || a == 47 || a == 94)
          {
              glob = a;
              break;
          }
          if (a == 61)
          {
              break;
          }
          int c = a - 48;
          string d = to_string(c);
          b = b + d;

      }
      temp = stoi(b);
      return temp;
}
int sum(int A, int <img src="http://s27.ucoz.net/sm/24/cool.gif" border="0" align="absmiddle" alt="cool" />
{
      return A + B;
}
int minoos(int A, int <img src="http://s27.ucoz.net/sm/24/cool.gif" border="0" align="absmiddle" alt="cool" />
{
      return A - B;
}
int mult(int A, int <img src="http://s27.ucoz.net/sm/24/cool.gif" border="0" align="absmiddle" alt="cool" />
{
      return A*B;
}
float divis(int A, int <img src="http://s27.ucoz.net/sm/24/cool.gif" border="0" align="absmiddle" alt="cool" />
{
      float res = (float)A / B;
      return res;
}
int step(int A, int <img src="http://s27.ucoz.net/sm/24/cool.gif" border="0" align="absmiddle" alt="cool" />
{

      return pow(A, B);
}
int main()
{
      while (true)
      {
          int a = chislo();
          int b = chislo();
          switch (glob)
          {
          case 43:
              cout << sum(a, b) << endl;
              break;
          case 45:
              cout << minoos(a, b) << endl;
              break;
          case 42:
              cout << mult(a, b) << endl;
              break;
          case 47:
              cout << divis(a, b) << endl;
              break;
          case 94:
              cout << step(a, b) << endl;
              break;
          default:
              break;
          }
      }
      system("pause");
      return 0;
}