adding difficulty to playHangman part one

.idea/vcs.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/Unity" vcs="Git" />
+  </component>
+</project>

src/main/c/Hangman/playHangman.c

@@ -9,14 +9,22 @@ char toLower(char ch) {
     return ch;
 }
 
-void playHangman(char *wordToGuess) {
+void playHangman() {
+    char *wordToGuess;
     int mistakes = 0;
     int score = 10;
     char guessedLetters[30] = ""; //Guessed letters
     char currentGuess[50];  //Current state of the guessed word
+    int difficulty;
 
     displayRules();
 
+    printf("choose the difficulty level: (1 or 2)\n");
+    printf("1. Easy \n");
+    printf("2. Hard \n");
+    scanf("%d", &difficulty);
+    wordToGuess = selectRandomWord(difficulty);
+
     // Initialize the current guess and print the rules
     initializeHangman(wordToGuess, currentGuess);
     currentState(currentGuess, mistakes);

src/main/c/Hangman/playHangman.h

@@ -10,13 +10,13 @@
 
 // Include function implementations directly from .c files
 
-void playHangman(char *wordToGuess);
+void playHangman();
 void initializeHangman(char *wordToGuess, char *currentGuess);
 void printRules();
 void drawHangman(int incorrectGuesses);
 void currentState(char *currentGuess, int mistakes);
 const char* selectRandomWord();
-const char wordsList[NUM_WORDS][MAX_WORD_LENGTH + 1];
+const char wordsList_easy[NUM_WORDS][MAX_WORD_LENGTH + 1];
 void displayRules();
 #define MAX_MISTAKES 6