Take Control of Your Loops!
Loops are great, but sometimes you just need to exit early (break) or skip an iteration (continue). Rust gives you the power to control your loops like a pro! Let’s dive into it.
1. Breaking Out of a Loop with break
The break statement immediately stops the loop and jumps to the next statement after it.
a) Basic break Example
fn main() {
let mut count = 0;
loop {
println!("Count: {}", count);
count += 1;
if count == 5 {
println!("Stopping loop!");
break;
}
}
}
The loop stops when count reaches 5. No infinite loops—unless you forget break!
b) break in a while Loop
fn main() {
let mut num = 1;
while num < 10 {
if num == 6 {
println!("We hit 6! Breaking out!");
break;
}
println!("Number: {}", num);
num += 1;
}
}
Great for stopping early based on conditions.
2. Skipping an Iteration with continue
The continue statement skips the current iteration and moves to the next one.
a) Using continue in a for Loop
fn main() {
for num in 1..=5 {
if num == 3 {
println!("Skipping 3!");
continue;
}
println!("Number: {}", num);
}
}
The number 3 is skipped, but the loop keeps going.
b) continue in a while Loop
fn main() {
let mut num = 0;
while num < 5 {
num += 1;
if num % 2 == 0 {
println!("Skipping even number: {}", num);
continue;
}
println!("Odd number: {}", num);
}
}
Skips even numbers, only prints odd numbers.
Wrapping Up
Now you’ve mastered: break to exit loops early. continue to skip specific iterations. Using them in for, while, and loop structures.
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