Pl solve this C ++ prog?

[jatinshah2]

// screen.h
// Screen class definition. Represents the screen of the ATM.
#ifndef SCREEN_H
#define SCREEN_H
#include <string.h>
char string;
class Screen
{
public:
void displayMessage( string ) const; // output a message
void displayMessageLine( string ) const; // output message with newline
void displayDollarAmount( double ) const; // output a dollar amount
}; // end class screen
#endif // SCREEN_H


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While compiling I am getting one error that

class Screen - declaration syntax error.