#include <stdio>
#include <conio>
#include <iostream>
#include <stdlib>
#include <dos.h>

main( )
//void main(int argc, char *argv[])

{
int a;  int b;  int result; char diya;
// a = atoi(argv[1]);
//strcpy(diya,argv[2]);
//b = atoi(argv[3]);
cout<<"Please enter first argument:"<<endl;
cin>>a;
cout<<"Please enter second argument:"<<endl;
cin>>b;
cout<<"Vvedite deystvie:"<<endl;
cin >>diya;

switch(diya)
 {
	case '/': if(b!= 0 ) { result=a/b; break; }
    else result= 0 ; cout<<"Na nol delit NELZYA"<<endl;
     break;
   case '*': result=a*b;  break;
   case '+': result=a+b;  break;
   case '-': result=a-b;  break;
   default:  result= 0 ; cout<<"uknown operation ";
 }
 cout<<"result="<<result;
 getch();
}