/* 
   Get a random line from a text file and display it to to stdout.
   The file should, for now, be named "test2.txt"...we'll change that later
   to make it accept a command line option.
*/
   
#include <stdio.h>
#include <stdlib.h>
#include <time.h>


enum {SUCCESS, FAIL, MAX_LEN = 4000};


main(void)
{

		
	FILE *fptr, *fptr2;
	char filename[] = "test2.txt";
	int reval = SUCCESS;

	/* Initialize the randomness thing */
	time_t now;
	time(&now);
	srand(now);
	/* Rand should be ready */	
	
	/* Can we open the file? */
	if ((fptr = fopen(filename, "r")) == NULL ) {
		printf("Can't open %s for reading.\n", filename);
		reval = FAIL;
		
	} else {
	/* Apparently we can open the file 
	   Set up the stuff. 	*/
		char buff[MAX_LEN];
		int c = 0;
		int d = 0;
		int j;
		
	/* This counts the lines in the file...
	   Surely there's a better way to do this than 
	   reading the entire file and then re-reading it.
	   Ask Steve */	
		while (fgets(buff, MAX_LEN, fptr) !=NULL) {
			d++;
			}
		fclose(fptr);


	/* Okay...gimme a random line of the file. */
		j=rand()%d+1;
				
	/* Sigh..._reopen_ the file.  Again, there's gotta be a better way. */
		fptr2 = fopen(filename, "r");				
		while (fgets(buff, MAX_LEN, fptr2) != NULL) {
			c++;  
			if (c == j) {
			printf("%s" , buff);
			}
		}
		fclose(fptr2);
		return reval;
		
	}


}