/**
 * The Video interface allows the processor
 * to output data or to request input. If a video card
 * is not provided to the processor, SaM READ commands
 * will place a 0 on the stack, and WRITE commands will
 * not output any data
 */
public interface Video{
	/**
	 * Integer output from the processor
	 * @param i The integer to be written
	 */
	void writeInt(int i);
	/**
	 * String output from the processor
	 * @param str The string to be written
	 */
	void writeString(String str);
	/**
	 * Float output from the processor
	 * @param f The float to be written
	 */
	void writeFloat(float f);
	/**
	 * Char output from the processor
	 * @param c The character to be written
	 */
	void writeChar(char c);
	/**
	 * Request from the processor for an integer.
	 * After prompting the user, the UI should return
	 * the provided integer.
	 * @return The integer that was inputted
	 */
	int readInt();
	/**
	 * Request from the processor for a float.
	 * After prompting the user, the UI should return
	 * the provided float.
	 * @return The float that was inputted
	 */
	float readFloat();
	/**
	 * Request from the processor for a char.
	 * After prompting the user, the UI should return
	 * the provided char.
	 * @return The char that was inputted
	 */
	char readChar();
	/**
	 * Request from the processor for a string.
	 * After prompting the user, the UI should return
	 * the provided string.
	 * @return The string that was inputted
	 */
	String readString();
}