One or Another explainer


#1

The aim of this puzzle: Use an if-else statement to print out whether the number is 1 or something else.

Walkthrough of the solution: An if-else statement is really just a regular if statement with another set of curly brackets. That second block {} of code will only run if the code in the if statement parentheses is false. So, the if statement checks the parentheses and if it’s true the first code block runs, and if it’s false the second code block runs. Only one will run, not both or neither.

In this puzzle, there are only two categories that the number can be: 1 or "not 1".

If it’s 2 or 3, then it is "not 1". That means we can just check if the number is ‘1’ in the if statement and if it doesn’t pass the test, the else block will run and we know the number is either 2 or 3. So in the else block, we just need to add a print() call with a string that says, “It is not 1”.

Sample code solution:
(Tap below to reveal)

var number = pickRandom(3);
print(number);

if (number === 1) {
  print('It is 1');
} else {
  print('It is not 1');
}

JavaScript Concepts: Binary Expression (===), Calling Functions, Conditionals (if-else statement), Identifiers, Variable Declaration
Grasshopper Concepts: pickRandom(), print()


listed #2