```
// Simple demonstration based on ex04.js
//
let height = 78;
let feet = Math.round(height / 12);
let inches = height - (feet * 12);
console.log(`With round: A height of ${height} inches is ${feet} feet ${inches} inches.`);
feet = Math.floor(height / 12);
inches = height - (feet * 12);
console.log(`With floor: A height of ${height} inches is ${feet} feet ${inches} inches.`);
feet = Math.trunc(height / 12);
inches = height - (feet * 12);
console.log(`With trunc: A height of ${height} inches is ${feet} feet ${inches} inches.`);
// Try with negative numbers too
height = -78;
feet = Math.round(height / 12);
inches = height - (feet * 12);
console.log(`With round: A height of ${height} inches is ${feet} feet ${inches} inches.`);
feet = Math.floor(height / 12);
inches = height - (feet * 12);
console.log(`With floor: A height of ${height} inches is ${feet} feet ${inches} inches.`);
feet = Math.trunc(height / 12);
inches = height - (feet * 12);
console.log(`With trunc: A height of ${height} inches is ${feet} feet ${inches} inches.`);
```

When run this displays:

```
With round: A height of 78 inches is 7 feet -6 inches.
With floor: A height of 78 inches is 6 feet 6 inches.
With trunc: A height of 78 inches is 6 feet 6 inches.
With round: A height of -78 inches is -6 feet -6 inches.
With floor: A height of -78 inches is -7 feet 6 inches.
With trunc: A height of -78 inches is -6 feet -6 inches.
```

Math.trunc looks like the easiest way to demonstrate how break a number into whole and fractional units.