读取一列整数，并按升序排列他们，最后打印这个列表。运行环境:Turbo2.0

#include<stdio.h>
#include<stdlib.h>
int
compare_integers(void const*a,void const*b)
{
 register int const *pa=a;
 register int const *pb=b;
 return *pa>*pb?1:*pa<*pb?-1:0;
}
int
main()
{
 int *array;
 int n_values;
 int i;
 printf("How many values are there?");
 if(scanf("%d",&n_values)!=1||n_values<=0)
 {
  printf("Illegal number of values.\n");
  exit(EXIT_FAILURE);
 }

 array=malloc(n_values*sizeof(int));
 if(array==NULL)
 {
  printf("Can't get memory for that many values.\n");
  exit(EXIT_FAILURE);
 }

    for(i=0;i<n_values;i+=1)
 {
  
  if(scanf("%d",&array[i])!=1)
  {
   printf("Error reading value #%d\n",i);
   free(array);
   exit(EXIT_FAILURE);
  }
 }

 qsort(array,n_values,sizeof(int),compare_integers);

 for(i=0;i<n_values;i+=1)
  printf("%d\n",array[i]);

 free(array);
 return EXIT_SUCCESS;
}