/*
Project ExtractArray

Extract elements from an array

Version 1.0 / 2002.04.01
Autor: pstrainer@gmx.net
*/

#include <stdio.h>
#include <conio.h>

#define array_size 100

int extr_elements(int,int,int*,int*);

void main (void) {
	int src_array[array_size],dst_array[array_size];
	int i,j,alim,zlim,found;

	printf("Projekt ExtractArray\n\n");

	// init array
	for (i=0; i<array_size; i++) {src_array[i]=i;}

	// ask user for limits
	printf("Sinnvolle Grenzen: %d...%d\n",0,array_size);
	printf("Untergrenze: ");
	scanf("%d",&alim);
	printf("Obergrenze:  ");
	scanf("%d",&zlim);

	// extract array
	found=extr_elements(alim,zlim,src_array,dst_array);

	// display result
	printf("\n%d Treffer gefunden:\n",found);
	i=0;
	while(i<found) {
		j=i+10;
		while ( (i<found) && (i<j)) 
			{printf("%4d",dst_array[i++]);}
		printf("\n");
	}

	#ifdef _DEBUG
	printf("\nPress any key to continue ");
	_getch();
	#endif
}

int extr_elements(int a, int z, int *src, int *dst) {
/*
Funktion extr_elements
Extract selected elements from array src to array dst.
Selection: a <= src[i] <= z

Version 1.0 / 2002.04.01
Autor: pstrainer@gmx.net

Syntax:
#define array_size ...

	int src[...],dst[...];
	int a,z;
	... ...
	extr_elements(a,z,src,dst);

Length: 
9 lines of code
*/
	int i,counter=0;

	for (i=0;i<array_size;i++) {
		if ( (src[i]>=a) && (src[i]<=z) ) {
			dst[counter++]=src[i];
		}
	}

	return counter;
}
/* ========== eof ========== */