/* isort Programm, welches ein Array von Zufallszahlen sortiert */

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

#define LENGTH(arr) ((sizeof(arr))/(sizeof(arr[0]))) 

int einfach_compare(const void *i1, const void *i2) {
     return *((const int*) i1) - *((const int*) i2);
}

int main(int argc, char *argv[])
{
     int rands[20];

     for (int i = 0; i < LENGTH(rands); i++) {
	  rands[i] = rand() % 50;
     }

     qsort(rands, LENGTH(rands), sizeof rands[0], &einfach_compare);

     for (int i = 0; i < LENGTH(rands); i++) {
	  if (printf("%d\n", rands[i]) < 0) {
	       perror("printf");
	       exit(EXIT_FAILURE);
	  }
     }

     if (EOF == fflush(stdout)) {
	  perror("fflush");
	  exit(EXIT_FAILURE);
     }

     return 0;
}