Basic Char* Error

Arcade.Initialize("ACFONT.bmp",256,256,"!","z",16,256);

void SDL_Bitmap_Font::Initialize(char *filename, int width, int height, char FirstCharacter, char LastCharacter, int NumOfRows, int ColumnLength)
{
	if((surf_Font = SDL_LoadBMP(filename))<0)
	{
		printf("Error Loading Font Image!\n");
	}

	iWidth = width;
	iHeight = height;
	cFirstCharacter = FirstCharacter;
	cLastCharacter = LastCharacter;
	iNumOfRows = NumOfRows;
	iColumnLength = ColumnLength;

	rect_WHUV.w = width;
	rect_WHUV.h = height;
	rect_WHUV.x = 0;
	rect_WHUV.y = 0;
}