diff --git a/src/wwm.c b/src/wwm.c
index e15b08e..849d60d 100644
--- a/src/wwm.c
+++ b/src/wwm.c
@@ -8,6 +8,8 @@ int geld = 0;
 int frage = 0;
 int useranswer;
 
+int ceingabe();
+
 int setGeld(int runde){
 	int Geldstufen[] = {0, 100, 200, 300, 500, 1000, 2000, 4000, 8000, 16000, 32000, 64000, 125000, 250000, 500000, 1000000};
 	geld = Geldstufen[runde];
@@ -22,10 +24,24 @@ int crandomNumber() {
 
 }
 
+
+void ccheckAnswer(int useranswer) {
+	if (useranswer == 5) {
+		printf("That is a shame, but ok.\n");
+		printf("Congratulations! You have won %d $!", geld);
+		exit(0);
+	}
+}
+
 int ceingabe() {
 	printf("Your answer (1-4):");
-	scanf("%d", &useranswer);
-	return useranswer;
+	int result = scanf_s("%d", &useranswer);
+	if (result == 0) {
+		printf("Please enter a number beetween 1 and 4 to answer or 5 to end the game!\n");
+		while (getchar() != '\n')
+		return ceingabe();
+		return useranswer;
+	}
 };
 
 void wwm(){
diff --git a/src/wwm.h b/src/wwm.h
index ab4ba12..3a461f8 100644
--- a/src/wwm.h
+++ b/src/wwm.h
@@ -10,6 +10,7 @@ extern int Geldstufen[];
 
 int crandomNumber();
 int ceingabe();
+void ccheckAnswer();
 
 int setGeld(int runde);