diff --git a/src/main/c/Stefan/blackjack.c b/src/main/c/Stefan/blackjack.c
index 5e995bd..bb649ec 100644
--- a/src/main/c/Stefan/blackjack.c
+++ b/src/main/c/Stefan/blackjack.c
@@ -12,6 +12,7 @@ int blackjack(){
 
 
     while(balance > 0){
+        printf("Guthaben: %d\n", balance);
         int bet = getBetBJ(balance);
         balance -= bet;
 
@@ -74,6 +75,7 @@ int getRandCard(){
 int playBJ(int bet, int balance){
 
     int winnings = 0;
+    int userCardsTotal = 0, computerCardsTotal = 0;
 
     int *computerCardArray = (int*) malloc(10 * sizeof(int));
 
@@ -96,13 +98,68 @@ int playBJ(int bet, int balance){
             }
 
 
+
+            for(int i = 2; i < 10; i++){
+
+                userCardsTotal = calculateCardsTotal(userCardArray, i);
+
+                printf("Your Cards Total : %d\n", userCardsTotal);
+
+                if(userCardsTotal > 21){
+                    printf("BUST\n");
+
+                    free(userCardArray);
+                    free(computerCardArray);
+                    return balance;
+                }
+
+                if(hit()){
+                    userCardArray[i] = getRandCard();
+                    printf("new card: %d\n", userCardArray[i]);
+                } else{
+                    break;
+                }
+
+            }
+
+            for(int i = 1; i < 10; i++){
+
+                computerCardsTotal = calculateCardsTotal(computerCardArray, i);
+
+                if(computerCardsTotal < 17){
+                    computerCardArray[i] = getRandCard();
+                    printf("Computer Card: %d\n", computerCardArray[i]);
+                    computerCardsTotal = calculateCardsTotal(computerCardArray, i + 1);
+                }
+                printf("Computer Cards Total: %d\n", computerCardsTotal);
+
+                if(computerCardsTotal >= 17 && computerCardsTotal < 21){
+                    if(calculateIfYouWon(userCardsTotal, computerCardsTotal)){
+                        winnings = calculateWinnings(false, bet);
+                    }
+                    break;
+                }
+
+                if(computerCardsTotal > 21){
+                    printf("COMPUTER BUST\n");
+                    winnings = calculateWinnings(false, bet);
+                    break;
+                }
+
+
+
+            }
+
+
+
+
             free(userCardArray);
         }
 
         free(computerCardArray);
     }
 
-    return balance;
+    return balance + winnings;
 }
 
 bool checkForBlackjack(int userCardArray[]){
@@ -113,6 +170,28 @@ bool checkForBlackjack(int userCardArray[]){
     return false;
 }
 
+bool hit(){
+
+    int answer;
+    printf("Hit (1) or stand (2): ");
+    scanf("%d", &answer);
+
+    if(answer != 1){
+        printf("stand.\n");
+        return false;
+    }
+    printf("hit.\n");
+    return true;
+}
+
+bool calculateIfYouWon(int userCardsTotal, int computerCardsTotal){
+    if(userCardsTotal > computerCardsTotal){
+        return true;
+    }
+    printf("Leider verloren.\n");
+    return false;
+}
+
 int calculateCardsTotal(int cardsArray[], int len){
     int sum = 0;
     bool aceFound = false;
@@ -130,7 +209,9 @@ int calculateCardsTotal(int cardsArray[], int len){
 
 int calculateWinnings(bool blackjack, int bet){
     if(blackjack){
+        printf("Du hast %d gewonnen!\n", bet * 2);
         return 3 * bet;
     }
+    printf("Du hast %d gewonnen!\n", bet);
     return 2 * bet;
 }
\ No newline at end of file
diff --git a/src/main/c/Stefan/blackjack.h b/src/main/c/Stefan/blackjack.h
index 71656e0..adc9a15 100644
--- a/src/main/c/Stefan/blackjack.h
+++ b/src/main/c/Stefan/blackjack.h
@@ -12,5 +12,7 @@ int playBJ(int bet, int balance);
 bool checkForBlackjack(int userCards[]);
 int calculateCardsTotal(int cardsArray[], int len);
 int calculateWinnings(bool blackjack, int bet);
+bool hit();
+bool calculateIfYouWon(int userCardsTotal, int computerCardsTotal);
 
 #endif // BLACKJACK_H
\ No newline at end of file
diff --git a/src/test/c/Stefan/test_blackjack.c b/src/test/c/Stefan/test_blackjack.c
index 5fee88e..25d5957 100644
--- a/src/test/c/Stefan/test_blackjack.c
+++ b/src/test/c/Stefan/test_blackjack.c
@@ -128,4 +128,32 @@ void test_no_blackjack_bet_equals_10() {
     //assert
     TEST_ASSERT_EQUAL_INT(expected_result, actual_result);
 
+}
+
+void test_calculate_if_you_won_20_vs_19() {
+
+    //arrange
+    int userCardsTotal = 20;
+    int dealerCardsTotal = 19;
+
+    //act
+    bool result = calculateIfYouWon(userCardsTotal, dealerCardsTotal);
+
+    //assert
+    TEST_ASSERT_TRUE(result);
+
+}
+
+void test_calculate_if_you_won_20_vs_21() {
+
+    //arrange
+    int userCardsTotal = 20;
+    int dealerCardsTotal = 21;
+
+    //act
+    bool result = calculateIfYouWon(userCardsTotal, dealerCardsTotal);
+
+    //assert
+    TEST_ASSERT_FALSE(result);
+
 }
\ No newline at end of file