diff --git a/src/main/c/Stefan/slot_machine.c b/src/main/c/Stefan/slot_machine.c
index f57a38e..1bb050e 100644
--- a/src/main/c/Stefan/slot_machine.c
+++ b/src/main/c/Stefan/slot_machine.c
@@ -17,6 +17,7 @@ void slotMachine(){
         balance = subtractBetFromBalance(bet, balance);
 
         randomizeSymbols(symbols);
+        spin(symbols, bet, balance);
     }
 
 }
@@ -88,6 +89,31 @@ void randomizeSymbols(Symbol symbols[]){
 
 }
 
+int spin(Symbol symbols[], int bet, int balance){
+
+    int winnings = getWinnings(symbols, bet);
+
+    return balance;
+}
+
+int getWinnings(Symbol symbols[], int bet){
+
+    int winnings = 0;
+
+    // 0 | 1 | 2
+    // 3 | 4 | 5
+    // 6 | 7 | 8
+
+    // 3 gleiche Symbole in einer Reihe gewinnen, Gewinn berechnen
+    for (int i = 0; i < ROWS; i++){
+        if (symbols[i * ROWS].letter == symbols[i * ROWS + 1].letter && symbols[i * ROWS].letter == symbols[i * ROWS + 2].letter) {
+            winnings += bet * symbols[i * ROWS].value;
+        }
+    }
+
+    return winnings;
+}
+
 void welcomeMessage(){
     printf("Herzlich Willkommen zur \n\n"
            "     _       _                           _     _            \n"
diff --git a/src/main/c/Stefan/slot_machine.h b/src/main/c/Stefan/slot_machine.h
index bebd77b..1ed2f00 100644
--- a/src/main/c/Stefan/slot_machine.h
+++ b/src/main/c/Stefan/slot_machine.h
@@ -7,6 +7,7 @@ typedef struct {
 } Symbol;
 
 #define NUM_OF_SYMBOLS 9
+#define ROWS 9
 
 void slotMachine();
 void welcomeMessage();
@@ -15,5 +16,7 @@ int userInput();
 int getBet(int balance);
 int subtractBetFromBalance(int bet, int balance);
 void randomizeSymbols(Symbol symbols[]);
+int spin(Symbol symbols[], int bet, int balance);
+int getWinnings(Symbol symbols[], int bet);
 
 #endif // SLOT_MACHINE_H
\ No newline at end of file