← → or space · progress saves for Continue on the roadmap
Goal
Use a fixed secret number, then compare user “guesses” with conditionals and a loop.
Step 1 — Single guess
void main() {
int secret = 7;
int guess = 5;
if (guess == secret) {
print('Correct!');
} else if (guess < secret) {
print('Too low');
} else {
print('Too high');
}
}- Run for guess 5, 7, 10 and confirm outputs: Too low, Correct!, Too high.
Step 2 — Multiple guesses with a loop (hardcoded)
void main() {
int secret = 7;
var guesses = [3, 7, 9, 5];
for (int guess in guesses) {
if (guess == secret) {
print('$guess: Correct!');
break;
} else if (guess < secret) {
print('$guess: Too low');
} else {
print('$guess: Too high');
}
}
}- Use
breakto stop when the guess is correct.
Step 3 — Limit attempts (e.g. 5 tries)
void main() {
int secret = 7;
var guesses = [3, 5, 8, 9, 7];
int maxTries = 5;
int tries = 0;
for (int guess in guesses) {
tries++;
if (guess == secret) {
print('Correct in $tries tries!');
break;
} else if (guess < secret) {
print('Too low ($tries/$maxTries)');
} else {
print('Too high ($tries/$maxTries)');
}
if (tries >= maxTries) {
print('No more tries. Secret was $secret');
break;
}
}
}- Track
triesand stop aftermaxTriesor on correct guess.
Practice tasks
- Use a
whileloop and a list of “guesses” (or later, stdin) so the game runs until correct or max tries. - Add a “hint”: after each wrong guess, print whether the secret is odd or even (using
secret % 2).