деление на 0 - C++

#include <iostream>
using namespace std;
int main()
{
char a;
int b,c;
cout<<"Vvedit viraz vidy: Cifra Operacia Cifra:"<<endl;
cin>>b>>a>>c;
switch (a)
{
        case '-': cout<<"riznutsa\t"<<b-c<<endl; break;
        case '+': cout<<"suma\t"<<b+c<<endl; break;
        case '*': cout<<"dobutok\t"<<b*c<<endl; break;
        case '/':
         {
          if (c) cout<<"4astka\t"<<b/c<<endl;
          else cout<<"Division by zero\t"<<endl;
          break;
         }
        default: cout<<"Nevirno vvedeniy operand"<<endl;
}
return 0;
}