average1.c

vc的源代码程序的基于最小特征向量的元素的集合方法的程序源代码

/*************************************************************************/
/*                                                                       */
/*        Average results for training and test sets                     */
/*        ------------------------------------------                     */
/*                                                                       */
/*        This is a generic program that averages any numbers found on   */
/*        a set of lines of the same pattern.                            */
/*                                                                       */
/*************************************************************************/


#include <stdio.h>

#define MAXLINE    200        /* max line length */
#define MAXVALS    300       /* max values to be averaged */


main()
{
	char Line[MAXLINE], *p1, *p2;
	int Numbers=0, Lines=0, i, TrainTest;
	float Val, Sum[MAXVALS];
	double strtod();

	for ( i = 0 ; i < MAXVALS ; i++ )
		Sum[i] = 0;

	while ( fgets(Line, MAXLINE, stdin) )
	{
		i = 0;
/*		printf("%s", Line); */

		/*  Count the numbers appearing on the line  */

		for ( p1 = Line ; *p1 != '\n' ; p1++ )
		{
			if ( *p1 < '0' || *p1 > '9' ) continue;

			Val = strtod(p1, &p2);
			Sum[i++] += Val;
			p1 = p2-1;
		}

		/*  The number of numbers must match any previous lines  */

		if ( Lines )
		{
			if ( i != Numbers ) exit(1);
		}
		else
		{
			Numbers = i;
		}

		Lines++;
	}

/*	putchar('\n');*/
	{
		i = 0;

		for ( p1 = Line ; *p1 != '\n' ; p1++ )
		{
			if ( *p1 < '0' || *p1 > '9' )
			{
				putchar(*p1);
			}
			else
			{
				printf("%.2g", Sum[i++] / Lines);
				strtod(p1, &p2);
				p1 = p2-1;
			}
		}
		putchar('\n');
	}
}