最后的DestroyStack应该怎么按照注释来写


#include
#include
typedef struct{
    double* values;
    int top;
    int maxTop;
} Stack;

bool CreateStack(Stack* stack, int size) {
    if (size <= 0)
        return false;
    stack->values = (double*)malloc(sizeof(double) * size);
    stack->top = -1; 
    stack->maxTop = size - 1;//max的最大index是size-1
        return true;
}
bool IsEmpty(Stack* stack) {
    if (stack->top == -1)
        return true;
    else
        return false;
}
bool IsFull(Stack* stack) {
    if (stack->top == stack->maxTop)
        return true;
    else
        return false;
}
bool Top(Stack* stack, double* x) {
    if (stack->top == -1) {
        return false;
    }
    else {
        *x = stack->values[stack->top];
        return true;
    }
}
bool Push(Stack* stack, double x) {
    if (IsFull(stack))
        return false;
    stack->values[++stack->top] = x;
    return true;
}
bool Pop(Stack* stack, double* x) {
    if (stack->top == -1)
        return false;
    else {
        *x = stack->values[stack->top];//
        stack->top--;
        return true;
    }
}
/*void DisplayStack(Stack* stack) {
    int i;
    for (i = stack->top; i > 0; i--) {
        printf("%d\n", stack->values[i]);
    }*/
void DestroyStack(Stack** pstack) {
    //frees the memory occupied by the stack values and stack struct
    // 将stack values和stack struct占用的内存free掉
    //point the stack to NULL
    //将stack指向NULL
}

这么写行不行？

void DestroyStack(Stack** pstack) {
    //frees the memory occupied by the stack values and stack struct
    // 将stack values和stack struct占用的内存free掉
    free(pstack->values);
    free(pstack->maxTop);
    //point the stack to NULL
    //将stack指向NULL
    pstack->top = NULL;
}