pointer_size.c

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

void test(int *vet)
{
    printf("depois %lu\n", ( sizeof(vet)/ sizeof(vet[0])) );
}

int main(int argc, char const *argv[])
{
    int vet[]={1,2,3,4,5};

    printf("antes %lu\n", ( sizeof(vet)/ sizeof(vet[0])) );
    test(vet);

    return 0;
}