Step 1 — for loop

void main() {
  for (int i = 0; i < 5; i++) {
    print(i);
  }
}

• i = 0: start; i < 5: condition; i++: step.
• Body runs while condition is true.

Step 2 — for-in (when you have a collection later)

void main() {
  for (int i in [1, 2, 3, 4, 5]) {
    print(i);
  }
}

• Runs once per element (you’ll use this more with lists).

Step 3 — while loop

void main() {
  int count = 0;
  while (count < 3) {
    print(count);
    count++;
  }
}

• Repeats while the condition is true.
• Ensure the condition eventually becomes false to avoid infinite loops.

Step 4 — break (exit loop)

void main() {
  for (int i = 0; i < 10; i++) {
    if (i == 4) break;
    print(i);
  }
}

• Stops the loop as soon as break runs.

Step 5 — continue (skip rest of iteration)

void main() {
  for (int i = 0; i < 5; i++) {
    if (i == 2) continue;
    print(i);
  }
}

• Skips the rest of the current iteration and goes to the next one.

Practice tasks

• Use a for loop to print 1 to 10.
• Use a while loop to print "Hello" 3 times.
• Use a for loop and break to stop when you reach 7.
• Use a for loop and continue to print only odd numbers from 1 to 10.