hint after 3 mistakes - function impl

src/main/c/Hangman/playHangman.c

@@ -9,6 +9,34 @@ char toLower(char ch) {
     return ch;
 }
 
+// Hint function
+char *hint = NULL;
+int hintAvailable = 1;
+
+char generateHint(char *wordToGuess, char *guessedLetters) {
+    int length = strlen(wordToGuess);
+    char availableLetters[length]; // Array to store letters not guessed yet
+    int numAvailableLetters = 0;
+
+    // Check each letter in the word
+    for (int i = 0; i < length; i++) {
+        char letter = wordToGuess[i];
+        // Check if the letter has not been guessed
+        if (strchr(guessedLetters, letter) == NULL) {
+            availableLetters[numAvailableLetters++] = letter; // Store the available letter
+        }
+    }
+
+    // Randomly select a letter from available letters
+    if (numAvailableLetters > 0) {
+        int randomIndex = rand() % numAvailableLetters;
+        return availableLetters[randomIndex];
+    } else {
+        // No available letters, return a placeholder value
+        return '-';
+    }
+}
+
 void playHangman() {
     char *wordToGuess;
     int mistakes = 0;