#include    <stdio.h>
#include    <stdlib.h>
#include    "project.h"

#define PRINT(X,Y)   printf("%i %f\n",X,Y);


/************************************************************************
 *	Reads in a binary sequence and outputs a graph representing the *
 *	Scrodinger equation						*
 *	David Longbottom						*
 ************************************************************************/


int main (int argc, char *argv[]) {
	char	c;
	int	i = 2;
	float	t = 1;
	float	E = 1;
	float	V = V_A;
	float	ca, cb, cc;

	ca = 0;
	cb = 1;
	
	//Useage: ./sequence2spectrum [E][c1]
	if (argc > 1 ) E = atof(argv[1]);
	if (argc > 2 ) cb = atof(argv[2]); 
	fprintf(stderr,"Value of E used: %f\n\
Value of c1 used: %f\n",E,cb); 
	
	//starting values
	PRINT(0,ca)
	PRINT(1,cb)
	
	while ( TRUE ) {
		if ((c = getchar() ) == '\n' ) break;	// \n is end of line 
			
		V = (c == A) ? V_A : V_B;
		//fprintf(stderr,"%i ",(int)V);
		
		cc = cb;
		cb = (E-V)*cb/t - ca;
		ca = cc;
		PRINT(i,cb) 
		i++;		
	}

	return(EXIT_SUCCESS);

}