Correct Units And Nested If Statements

How I am supposed to set up the units for my program, and how to correctly display them in the console. Here is a description of my program.

To display the nonzero denominations only, using singular words for single units such as 1 dollar and 1 penny, and plural words for more than one unit such as 2 dollars and 3 pennies. You must use nested if statement when displaying the output.

Sample run:
Enter an amount in double, for example 11.56: 1.56
Your amount 1.56 consists of
1 dollar
2 quarters
1 nickel
1 penny