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Control flow

Conditions​

if and while require a bool expression. Numbers are not implicitly treated as true or false.

If and else​

assign score to 85
if score >= 80 {
    show 1
} else {
    show 0
}

This prints 1. The else block is optional. Braces are required around each branch. Put a nested if inside an else block when you need another decision; else if shorthand is not supported.

assign score to 85
if score >= 90 {
    show 3
} else {
    if score >= 80 {
        show 2
    } else {
        show 1
    }
}

While loops​

A while loop evaluates its condition before each iteration:

assign counter to 0
while counter < 5 {
    show counter
    reassign counter to counter + 1
}

This prints 0 through 4. Update the values controlling your condition so the loop can finish.

Nested loops​

assign i to 0
assign total to 0
while i < 3 {
    assign j to 0
    while j < 2 {
        reassign total to total + 1
        reassign j to j + 1
    }
    reassign i to i + 1
}
show total

The output is 6. The inner j exists only within the outer loop body.

Returning from a function​

A return exits the enclosing function, including from inside a loop or branch. Functions must satisfy the compiler's return rules.

for, break, continue, and logical condition operators are not implemented.