#include<stdio.h>
#include<stdlib.h>
 
int fun_compare (const void * el1, const void * el2){
  int diff;
  diff = ( *(double*)el1 - *(double*)el2 );
  return diff;
}

int main (){
  int i;
  const int dim=5;
  double array[5]={42.31, 12.23, 52.342, 91, 3.22};
  qsort(array, dim, sizeof(double), fun_compare);
  for (i=0; i<dim; i++){
    printf ("%3.3f ",array[i]);
  }  
}