데이터 구조 삼원 조 C 언어 실현

#include 
#include 

#define OK        1
#define ERROR     0
#define OVERFLOW  -2
typedef int       Status;
typedef int       ElemType;
typedef ElemType* Triplet;

Status InitTriplet(Triplet *T, ElemType v1, ElemType v2, ElemType v3);
Status DestroyTriplet(Triplet *T);
Status Get(Triplet T, int i, ElemType *e);
Status Put(Triplet *T, int i, ElemType e);
Status IsAscending(Triplet T);
Status IsDescending(Triplet T);
Status Max(Triplet T, ElemType *e);
Status Min(Triplet T, ElemType *e);

int main()
{
	Triplet T;
	ElemType e, e1=11, e2=55, e3=99;

	if (!InitTriplet(&T, e1, e2, e3))
        return 0;

	Max(T, &e);
	printf("     : %d
", e);

	Min(T, &e);
	printf("     : %d
", e);

	printf("     : %d
", IsAscending(T));
	printf("     : %d
", IsDescending(T));

	DestroyTriplet(&T);
	return 0;
}

/**<       ,    v1, v2, v3   */
Status InitTriplet(Triplet *T, ElemType v1, ElemType v2, ElemType v3)
{
    *T = (ElemType *)malloc(3*sizeof(ElemType));

    if (!T) exit(OVERFLOW);

    (*T)[0] = v1;
    (*T)[1] = v2;
    (*T)[2] = v3;
    return OK;
}

/**<      ，     */
Status DestroyTriplet(Triplet *T)
{
    free(*T);
    return OK;
}

/**<   e       T    i    */
Status Get(Triplet T, int i, ElemType *e)
{
    if (i<1 || i>3) return ERROR;

    *e = T[i-1];
    return OK;
}

/**<       T    i     e */
Status Put(Triplet *T, int i, ElemType e)
{
    if (i<1 || i>3) return ERROR;

    (*T)[i-1] = e;
    return OK;
}

/**<      T         ，  1，     0 */
Status IsAscending(Triplet T)
{
    return T[0]<=T[1] && T[1]<=T[2];
}

/**<      T         ，  1，     0 */
Status IsDescending(Triplet T)
{
    return T[0]>=T[1] && T[1]>=T[2];
}

/**<   e       T      */
Status Max(Triplet T, ElemType *e)
{
	*e = T[0]>=T[1] ? (T[0]>=T[2] ? T[0] : T[2])
                    : (T[1]>=T[2] ? T[1] : T[2]);
	return OK;
}

/**<   e       T      */
Status Min(Triplet T, ElemType *e)
{
	*e = T[0]<=T[1] ? (T[0]<=T[2] ? T[0] : T[2])
                    : (T[1]<=T[2] ? T[1] : T[2]);
	return OK;
}