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Advanced Programming Techniques in C

Solution Review: Beckett's Problem

Explore the solution to Beckett's Problem using reflected binary Gray code. Understand how recursive functions model this classical problem, representing actor movements on stage with minimal state changes. This lesson helps you grasp recursive problem-solving techniques in C programming, emphasizing unique binary sequences for efficient state tracking.

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Solution

The program given below shows a prototype of moves( ) and a call to it from main( ).

C
#include <stdio.h>

#include <stdbool.h>



void moves ( int n, bool flag ) ;

int main( )

{

	int n ;

    n = 3;

	moves ( n, true ) ;

}



void moves ( int n, bool flag )

{

	if ( n == 0 )

		return ;

	moves ( n - 1, true ) ;

	if ( flag == true )

		printf ( "Enter %d\n", n ) ;

	else

		printf ( "Exit %d\n", n ) ;

	moves ( n - 1, false ) ;

}

Explanation

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