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Conditional Statements

Conditional statements execute different blocks of code based on whether a condition evaluates to true or false.

Why this exists​

Conditional statements allow programs to make decisions and branch execution paths, enabling dynamic behavior based on runtime values.

How it works​

Use the check keyword followed by a condition expression. If the condition is truthy, execute the following block. Optionally, use else to execute an alternative block if the condition is falsy.

Conditions are expressions that evaluate to booleans, numbers, or other values; falsy values include false, 0, null, empty strings, empty arrays.

Examples​

Basic conditional:

set x = 5
check x > 3 {
  print("x is greater than 3")
}

With else:

set age = 18
check age >= 18 {
  print("Adult")
} else {
  print("Minor")
}

Nested conditionals:

set score = 85
check score >= 90 {
  print("A")
} else check score >= 80 {
  print("B")
} else {
  print("C")
}

Common mistakes​

  • Forgetting to use check instead of if.
  • Not enclosing blocks in braces {}.
  • Using assignment = instead of comparison == in conditions.
  • Assuming null or 0 are truthy.