Thread: decimals in calculator

how do you make it posible that the user can input a decimal?
i heard about floats , but cant find how-to
for example

Code:

inline void vermenigvuldigen()
{
      
int x;
int y;
C.I = 8;
setcolor(C.I);

 cout<<"schrijf 2 getallen voor te vermenigvuldigen: ";
cin>>x>>y;
cin.ignore();
cout<<"het produkt van de 2 getallen is ";
C.I = 10;
setcolor(C.I);
cout<<x*y<<"\n";
int input;
C.I = 4;
setcolor(C.I);
cout<<"1.nog eens\n";
cout<<"2.ga terug naar het hoofdmenu\n";
cout<<"3.sluiten\n";
cout<<"selectie";
cin>>input;
switch (input) {
       case 1:
            system("cls");
            vermenigvuldigen();
       case 2 : 
              system("cls");
              main();
      case 3 :
           system("cls");
           exit ( EXIT_FAILURE );//sluit af  
        default:
                system("cls");    
                cout<<"error , slechte selectie , probeer opnieuw\n";
                vermenigvuldigen();                
}
}

how do you put them in the code?

just answer on my question
i m just beginning and follewing the tutorials here
but wants to experiment with a calculator

btw : IT'S JUST A PART OF THE CODE