Penny Pincher explainer


#1

Aim of the puzzle: Complete the inCents() function to convert dollars into pennies.
Walk through of solution: The starter code begins by declaring the variable wallet and giving it the value 20. Below that the function inCents() is declared, but not finished. It takes the parameter dollars and assigns this to wallet.

Finish the inCents() function by tapping on dollars inside the body { } of the function to highlight it and bring up the keyboard. Then use the keys * and num to multiply dollars * 100. When this function is finished, run the code to complete the puzzle.

When the program runs, the code will print the first console.log() statement, which prints out the value of wallet. The inCents() function is then called, and given wallet as an argument. The function will multiply this number by 100 and assign it back to wallet. The second console.log() statement will then print out the value of wallet, which is now 2000.
Sample code solution:

let wallet = 20;

function inCents(dollars) {
    wallet = dollars * 100;
}

console.log('You have ' + wallet + ' dollars.');
inCents(wallet);
console.log('You have ' + wallet + ' cents.');

Javascript Concepts: Arithmetic Operators (*), Binary Expression (+ concatenation), Calling Functions, Function Declarations, Code Block (function), console.log() , Variable Scope (let)