Stack

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Stack

Considérons le programme stack.c présenté dans le syllabus. Cette implémentation d'une pile permet d'ajouter et de retirer un élément de la pile. Lesquelles des implémentations ci-dessous sont des implémentations correctes d'une fonction size permettant de calculer le nombre d'éléments stockés dans la pile ?

int size(struct node_t* stack)
{
    struct node_t *curr = stack;
    int count = 0;
    while (curr!=NULL) {
        count ++;
        curr = stack->next;
    }
    return count;
}

int size(struct node_t* stack)
{
    return sizeof(stack);
}

int size(struct node_t* stack)
{
    int count = 0;
    while (stack!=NULL) {
        count ++;
        stack++;
    }
    return count;
}

int size(struct node_t* stack)
{
    int count = 0;
    while (stack!=NULL) {
        count ++;
        stack = stack->next;
    }
    return count;
}

int size(struct node_t stack)
{
    struct node_t curr = stack;
    int count = 0;
    while (curr) {
        count ++;
        curr = stack->next;
    }
    return count;
}

int size(struct node_t* stack)
{
    struct node_t *curr = stack;
    int count = 0;
    while (curr) {
        count ++;
        curr++;
    }
    return count;
}

Author(s)	Olivier Bonaventure
Deadline	No deadline
Submission limit	No limitation

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