【求助】新人求助一个VC++五子棋的问题

void testDrawChessBoard()
{
int boardPoint[ 15 ][ 15 ];
memset( boardPoint , 0 , sizeof(boardPoint));
boardPoint[ 7 ][ 7 ] = 1;
for (int i = 0; i < 15; i++)
for (int j = 0; j < 15; j++)
{
if (j % 15 == 0)
printf( "\r\n" );
if (boardPoint[ i ][ j ] == 0)
printf( "+" );
else
printf( "x" );
}
}
int _tmain(int argc, _TCHAR* argv[])
{
testDrawChessBoard();
return 0;
}