diff --git a/src/c/ticTacToe.c b/src/c/ticTacToe.c
index 38be611..a4208a8 100644
--- a/src/c/ticTacToe.c
+++ b/src/c/ticTacToe.c
@@ -52,4 +52,39 @@ bool validateUserInput(int row, int col){
         }
     }
     return false;
+}
+
+int wasGameWon(char field[3][3]){
+    int winner = NOWINNERYET; 
+    if(field[0][0] == 'O'){
+        if (field[0][0] == field[0][1] && field[0][2] == field[0][1]){
+            winner = PLAYER;
+        }
+        else if (field[0][0] == field[1][0] && field[1][0] == field[2][0]){
+            winner = PLAYER;
+        }
+        else if (field[0][0] == field[1][1] && field[1][1] == field[2][2]){
+            winner = PLAYER;
+        }
+    }
+    else if(field[2][2] == 'O'){
+        if (field[2][2] == field[2][1] && field[2][2] == field[2][0]){
+            winner = PLAYER;
+        }
+        else if (field[2][2] == field[1][2] && field[1][2] == field[0][2]){
+            winner = PLAYER;
+        }
+    }
+    if(field[1][1] == 'O'){
+        if (field[1][1] == field[0][1] && field[0][1] == field[2][1]){
+            winner = PLAYER;
+        }
+        else if (field[1][1] == field[1][0] && field[1][0] == field[1][2]){
+            winner = PLAYER;
+        }
+        else if (field[2][0] == field[1][1] && field[1][1] == field[0][2]){
+            winner = PLAYER;
+        }
+    }
+    return winner;
 }
\ No newline at end of file
diff --git a/src/c/ticTacToe.h b/src/c/ticTacToe.h
index 250a462..9bca53a 100644
--- a/src/c/ticTacToe.h
+++ b/src/c/ticTacToe.h
@@ -2,10 +2,18 @@
 #define TICTACTOE_H
 #include <stdbool.h>
 
+enum Winner{
+    PLAYER,
+    COMPUTER,
+    NOWINNERYET,
+    DRAW
+};
+
 void printPrompt();
 void printField(char field[3][3]);
 void initField(char field[3][3]);
 void getPlayerInput(char field[3][3]);
 bool validateUserInput(int row, int col);
+int wasGameWon(char field[3][3]);
 
 #endif
\ No newline at end of file
diff --git a/test/c/test_ticTacToe.c b/test/c/test_ticTacToe.c
index bb0509c..f86583b 100644
--- a/test/c/test_ticTacToe.c
+++ b/test/c/test_ticTacToe.c
@@ -37,5 +37,22 @@ void test_ticTacToe_invalidUserInput(void)
     TEST_ASSERT_EQUAL_INT(false, result);
 }
 
+void test_ticTacToe_playerWins(void)
+{
+    /* arrange */
+    int result;
+    char field[][3] = {
+        {'O', 'O', '-'},
+        {'-', 'O', '-'},
+        {'-', '-', 'O'}
+    };
+
+    /* act */
+    result = wasGameWon(field);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(PLAYER, result);
+}
+
 
 #endif // TEST
\ No newline at end of file