added gitignore

modified Makefile to compile external lib playerlib.cc
added geteEnemyChar()

players/playerlib.cc

@@ -3,13 +3,15 @@
 
 #include "playerlib.h"
 
-char getEnemyChar(char ownc)
-{
-	char enemyc;
-	switch(ownc){
-		case "O": enemyc="X"; break;
-		case "X": enemyc="O";
-	}
-	return enemyc;
-}
-
+char
+getEnemyChar(char c) {
+    char enemyc;
+    switch(c)
+    {
+        case 'X':
+            enemyc='O'; break;
+        case 'O':
+            enemyc='X'; break;
+    }
+    return enemyc;
+}

players/playerlib.h

@@ -1,8 +1,7 @@
 #ifndef PLAYERLIB_H
 #define PLAYERLIB_H
-char enemyc = 0;
 
 //returns the character used for the enemy's stones
-char getEnemyChar(char);
+extern char getEnemyChar(char);
 
 #endif

players/random-player.cc

@@ -45,10 +45,8 @@ int main(void)
     //    sind durch einen Punkt (.) gekennzeichnet. 
     
     // 2. TODO: Strategie hier einfügen. Resultat in turn_row und turn_col speichern.
-	if(!enemyc)
-		enemyc = getEnemyChar(state_buffer[0]);
-	printf("%s",enemyc);
-    
+
+    printf("%c\n",getEnemyChar(state_buffer[0]));
     // 3. Return result
     //send_move(turn_row, turn_col);