In THE C++ Program, how would I be able to display the DECIMAL NUMBERS seperately?

Example:

U.S. Dollar to Mexican Peso and Euro converter

Please enter an amount of U.S. Dollars: 10.5

cout >>

10.50 U.S. Dollars are equal to: 191 Mexican Pesos with 72 cents 8 Euros with 89 cents

How did this person display the decimal numbers seperately from the whole number???