Added comments

pendu.c

@@ -1,9 +1,7 @@
-#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-#include <unistd.h>
 
 #define MAX_WORDS 14
 #define MAX_TRIES 6
@@ -37,38 +35,64 @@ void display_hangman(int tries) {
     }
 }
 
-/* this function display time out when user does nothing during 30s and verify signal*/
-void sig_handler(int signum){
-    if (signum == SIGALRM){
+/*
+getWordByLength() function adds the possibility to the user to choose how many letters maximum the word to guess can contains.
 
-        printf("\ntime out\n");
-        exit (1);
+Returns:
+    A random word from the words list that correspond to the user input
+*/
+const char* getWordByLength(){
+    int maxLetters;
+    printf("Difficulté - Entrez le nombre de lettres maximum à deviner : ");
+    scanf(" %d", &maxLetters);
+    const char *newWords[MAX_WORDS];
+    int wordsFound = 0;
+    for (int i = 0; i < MAX_WORDS; i++) {
+        if(strlen(words[i]) <= maxLetters){
+            newWords[wordsFound] = words[i];
+            wordsFound++;
         }
     }
+    if(wordsFound==0){
+        return "";
+    }
+    const char *word = newWords[rand() % wordsFound];
+    /* SECOND WORD TO GUESS (NOT WORKING)
+    wordsFound = 0;
+    for (int i = 0; i < MAX_WORDS; i++) {
+        if(strlen(words[i]) <= maxLetters-strlen(word)){
+            newWords[wordsFound] = words[i];
+            wordsFound++;
+        }
+    }
+    if(wordsFound != 0){
+        word = (const char*) strcat((char *) word, newWords[rand() % wordsFound]);
+    }*/
+    return word;
+}
 
 int main() {
     srand(time(NULL));
-    const char *word = words[rand() % MAX_WORDS];
+    const char *word = getWordByLength();
+    if(word==""){
+        printf("Aucun mot n'a été trouvé.");
+        return 1;
+    }
     int word_length = strlen(word);
     char guessed[word_length];
     int tries = 0;
     int guessed_correctly = 0;
 
-    signal(SIGALRM,sig_handler);
-
     for (int i = 0; i < word_length; i++) {
         guessed[i] = '_';
     }
     guessed[word_length] = '\0';
 
     while (tries < MAX_TRIES && guessed_correctly < word_length) {
-
         printf("\nMot à deviner : %s\n", guessed);
         display_hangman(tries);
         char guess;
-        alarm(30);
         printf("Entrez une lettre : ");
-        alarm(30);
         scanf(" %c", &guess);
         int found = 0;