C++ da do-while Kullanımı

//www.ethemsulan.com
#include <cstdlib>
#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{
    int c=1;
    do{
        cout<<c++<<endl;
        }while(c<=10);
        int b;
    cout<<"Bi islem sec=";
    cin>>b;
    switch(b){
 case 1: cout<<"Toplama islemi sectiniz "<<endl;
              break;
case 2: cout<<"Cykarma islemi sectiniz "<<endl;              
              break;              
case 3: cout<<"Carpma islemi sectiniz "<<endl;
                            break;
case 4: cout<<"Bolme islemi sectiniz "<<endl;
                            break;
default:cout <<"yanlis bir daha dene";
                            break;
              } 
    system("PAUSE");
    return EXIT_SUCCESS;
}