抽象数据类型Triplet的表示与实现

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

#define TRUE         1
#define FALSE        0
#define OK           1
#define ERROR        0
#define INFEASIBLE  -1

typedef int status;
typedef int ElemType;
typedef ElemType* Triplet;

status InitTriplet(Triplet &T, ElemType v1, ElemType v2, ElemType v3)
{
       T=(Triplet)malloc(3*sizeof(ElemType));
       T[0]=v1;T[1]=v2;T[2]=v3;

       return OK;
}

status DestoryTriplet(Triplet &T)
{
       free(T);
       T=NULL;

       return OK;
}

status Get(Triplet T, int i, ElemType &e)
{
       if(i<1||i>3)
              return ERROR;
       e=T[i-1];
       return OK;
}

status put(Triplet &T, int i, ElemType e)
{
       if(i<1||i>3)
              return ERROR;
       T[i-1]=e;
       return OK;
}

status IsAscending(Triplet T)
{
       return (T[0]<T[1]&&T[1]<T[2]);
}

status IsDescending(Triplet T)
{
       return (T[0]>T[1]&&T[1]>T[2]);
}

status Max(Triplet T, ElemType &e)
{
       e=((T[0]<=T[1]?T[1]:T[0])<=T[2]?T[2]:(T[0]<=T[1]?T[1]:T[0]));
       return e;
}

status Min(Triplet T, ElemType &e)
{
       e=((T[0]<=T[1]?T[0]:T[1])<=T[2]?(T[0]<=T[1]?T[0]:T[1]):T[2]);
       return e;
}

void PrintTriplet(const Triplet T)
{
       printf("%4d%4d%4d\n",T[0],T[1],T[2]);
}

int main()
{
       Triplet T;
       ElemType e;

       InitTriplet(T,2,6,3);
       PrintTriplet(T);
       Get(T,2,e);
       e=e*4;

       put(T,1,e);
       PrintTriplet(T);

       if(IsAscending(T))
              PrintTriplet(T);
       else
              printf("%4d\n",Min(T,e));

       return 0;
}