Write dropPiece function

src/main/c/VierGewinnt.c

@@ -138,3 +138,15 @@ void clearScreen() {
 int isColumnFull(char board[ROWS][COLS], int col) {
     return (board[0][col] != ' ');
 }
+
+//Write dropPiece function
+int dropPiece(char board[ROWS][COLS], int col, char player) {
+    for (int i = ROWS - 1; i >= 0; i--) {
+        if (board[i][col] == ' ') {
+            board[i][col] = player;
+            return 1;
+        }
+    }
+
+    return 0; // Column is full
+}