40 lines
1011 B
Plaintext
40 lines
1011 B
Plaintext
// Unlike C/C++, there's no restriction on the order of function definitions
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fn main() {
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// We can use this function here, and define it somewhere later
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fizzbuzz_to(100);
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}
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// Function that returns a boolean value
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fn is_divisible_by(lhs: u32, rhs: u32) -> bool {
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// Corner case, early return
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if rhs == 0 {
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return false;
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}
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// This is an expression, the `return` keyword is not necessary here
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lhs % rhs == 0
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}
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// Functions that "don't" return a value, actually return the unit type `()`
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fn fizzbuzz(n: u32) -> () {
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if is_divisible_by(n, 15) {
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println!("fizzbuzz");
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} else if is_divisible_by(n, 3) {
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println!("fizz");
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} else if is_divisible_by(n, 5) {
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println!("buzz");
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} else {
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println!("{}", n);
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}
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}
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// When a function returns `()`, the return type can be omitted from the
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// signature
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fn fizzbuzz_to(n: u32) {
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for n in 1..=n {
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fizzbuzz(n);
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}
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}
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// From https://doc.rust-lang.org/rust-by-example/fn.html
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