// ============================================================================
// 012 — While Loops
// ============================================================================
// Demonstrates the while loop for repeated execution.
//
// Run:   soma run 012_while_loop.cell countdown 5
// Expect:
//   5...
//   4...
//   3...
//   2...
//   1...
//   Liftoff!

cell Countdown {

    on countdown(n: Int) {
        let i = n

        // "while" repeats as long as the condition is true
        while i > 0 {
            print("{i}...")
            i = i - 1
        }

        print("Liftoff!")
        return "done"
    }

    // Another example: computing powers with a while loop
    // Run: soma run 012_while_loop.cell power 2 10
    // Expect: 2^10 = 1024
    on power(base: Int, exp: Int) {
        let result = 1
        let i = 0
        while i < exp {
            result = result * base
            i = i + 1
        }
        print("{base}^{exp} = {result}")
        return result
    }
}