/* Seven Segment Indicators (15 pt)

Seven segment indicators are commonly used to display numbers 0-9.
Using an ASCII approximation the numbers can be represented as:
 _       _   _       _   _   _   _   _
| |   |  _|  _| |_| |_  |_    | |_| |_|
|_|   | |_   _|   |  _| |_|   | |_|  _|

Write a complete C program that generates two random numbers in the 
range [0 .. 9] and prints them on the screen side by side using an 
ASCII encoding of their seven-segment indicator representaion (as 
shown in the sample runs given below). The program must come up with 
a different pair of numbers every time you run it. It is OK if during  
some (but not all) runs the two random numbers are the same.

SAMPLE RUN #1:
 _   _
 _|   |
|_    |

SAMPLE RUN #2:

 _   _
|_|  _|
|_|  _|

SAMPLE RUN #3:

 _
|_| |_|
 _|   |

*/


#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define DEBUG 0

int main()
{

char number[10][3][3]=	{     	/* 0 */
							{{' ', '_', ' '},
							 {'|', ' ', '|'},
							 {'|', '_', '|'}},  

								/* 1 */
							{{' ', ' ', ' '},
							 {' ', ' ', '|'},
							 {' ', ' ', '|'}},  

								/* 2 */
							{{' ', '_', ' '},
							 {' ', '_', '|'},
							 {'|', '_', ' '}},  

								/* 3 */
							{{' ', '_', ' '},
							 {' ', '_', '|'},
							 {' ', '_', '|'}},  

								/* 4 */
							{{' ', ' ', ' '},
							 {'|', '_', '|'},
							 {' ', ' ', '|'}},  

								/* 5 */
							{{' ', '_', ' '},
							 {'|', '_', ' '},
							 {' ', '_', '|'}},  

								/* 6 */
							{{' ', '_', ' '},
							 {'|', '_', ' '},
							 {'|', '_', '|'}},  

								/* 7 */
							{{' ', '_', ' '},
							 {' ', ' ', '|'},
							 {' ', ' ', '|'}},  

								/* 8 */
							{{' ', '_', ' '},
							 {'|', '_', '|'},
							 {'|', '_', '|'}},  

								/* 9 */
							{{' ', '_', ' '},
							 {'|', '_', '|'},
							 {' ', '_', '|'}}
					};

	int i,j,k;

	int n1, n2;

	srand ( time(NULL) );  // initialize the random number generator
	n1 = rand()%10;        // generate a random number [0..9]
	n2 = rand()%10;        // generate a second random number
	
	// print the two side by side
	for(i=0; i<3; i++)
	{
		for(j=0; j<3; j++)
			printf("%c", number[n1][i][j]);

		printf(" ");
		
		for(j=0; j<3; j++)
			printf("%c", number[n2][i][j]);

		printf("\n");
	}		

	printf("\n");
	system("pause");
}