/*
 * This program reads numbers from the file "numbers", determining
 * and printing the maximum number.
 */
#include <stdio.h>

int main () {
	FILE	*f;		/* file pointer */
	float	num, 		/* number to read in */
		max;		/* current maximum */

	/* open the file for reading */

	f = fopen ("numbers", "r");

	/* get a number from the file */

	fscanf (f, "%f", &num);

	/* assume this is the maximum number until we hear otherwise */

	max = num;

	/* while we haven't reached the end of file... */

	while (!feof (f)) {

		/* if the number we read in is bigger than max,
		 * set max equal to it 
	 	 */

		if (num > max) max = num;

		/* get another number, or possibly trigger end of file */

		fscanf (f, "%f", &num);
	}

	/* close the file */

	fclose (f);

	/* print the maximum */

	printf ("maximum is %f\n", max);
	return 0;
}