Ponteiros C - 1.

/* Autor : Tiago Portela
   Email : sapitando@gmail.com
   Sobre : Compilado com GCC e LCC.
   Obs : Apenas tentando aprender algoritimos, sozinho, por hobby. */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <conio.h>

int main(void){

    void **lpGP = calloc(3,sizeof(void*));

    lpGP[0] = malloc(11 * sizeof(char));
    strcpy(((char**)(lpGP))[0], "ABCDEFGHIJ");
//  strcpy(&((char**)(lpGP))[0][0], "ABCDEFGHIJ");
//  strcpy((char*)(lpGP[0]), "ABCDEFGHIJ");
//  strcpy(&((char*)(lpGP[0]))[0], "ABCDEFGHIJ");


    lpGP[1] = malloc(2 * sizeof(int));

    ((int**)(lpGP))[1][0] = 250;
//  *(*(((int**)(lpGP)) + 1) + 0) = 250;
//  ((int*)(lpGP[1]))[0] = 250;
//  *((int*)(*(lpGP + 1)) + 0) = 250;
//  *(int*)((char*)(*(lpGP + 1)) + (0 * sizeof(int))) = 250;

    ((int**)(lpGP))[1][1] = 500;
//  *(*(((int**)(lpGP)) + 1) + 1) = 500;
//  ((int*)(lpGP[1]))[1] = 500;
//  *((int*)(*(lpGP + 1)) + 1) = 500;
//  *(int*)((char*)(*(lpGP + 1)) + (1 * sizeof(int))) = 500;


    lpGP[2] = malloc(2 * sizeof(float));

    ((float**)(lpGP))[2][0] = 5.25;
//  *(*(((float**)(lpGP)) + 2) + 0) = 5.25;
//  ((float*)(lpGP[2]))[0] = 5.25;
//  *((float*)(*(lpGP + 2)) + 0) = 5.25;
//  *(float*)((char*)(*(lpGP + 2)) + (0 * sizeof(float))) = 5.25;

    ((float**)(lpGP))[2][1] = 10.50;
//  *(*(((float**)(lpGP)) + 2) + 1) = 10.50;
//  ((float*)(lpGP[2]))[1] = 10.50;
//  *((float*)(*(lpGP + 2)) + 1) = 10.50;
//  *(float*)((char*)(*(lpGP + 2)) + (1 * sizeof(float))) = 10.50;


    printf("%p -> %p\n", (void*)(&lpGP), (void*)(lpGP));
    puts("");

    printf("%p -> %p\n", (void*)(&lpGP[0]), lpGP[0]);
//  printf("%p -> %p\n", (void*)(lpGP + 0), *(lpGP + 0));

    printf("%p -> %p\n", (void*)(&lpGP[1]), lpGP[1]);
//  printf("%p -> %p\n", (void*)(lpGP + 1), *(lpGP + 1));

    printf("%p -> %p\n", (void*)(&lpGP[2]), lpGP[2]);
//  printf("%p -> %p\n", (void*)(lpGP + 2), *(lpGP + 2));
    puts("");

    printf("%p = %s\n", (void*)(&((char*)(lpGP[0]))[0]), &((char*)(lpGP[0]))[0]);
//  printf("%p = %s\n", (void*)((char*)(*(lpGP + 0)) + 0), ((char*)(*(lpGP + 0)) + 0));
    puts("");

    printf("%p = %i\n", (void*)(&((int*)(lpGP[1]))[0]), ((int*)(lpGP[1]))[0]);
//  printf("%p = %i\n", (void*)((int*)(*(lpGP + 1)) + 0), *((int*)(*(lpGP + 1)) + 0));
//  printf("%p = %i\n", (void*)((char*)(*(lpGP + 1)) + (0 * sizeof(int))), *(int*)((char*)(*(lpGP + 1)) + (0 * sizeof(int))));

    printf("%p = %i\n", (void*)(&((int*)(lpGP[1]))[1]), ((int*)(lpGP[1]))[1]);
//  printf("%p = %i\n", (void*)((int*)(*(lpGP + 1)) + 1), *((int*)(*(lpGP + 1)) + 1));
//  printf("%p = %i\n", (void*)((char*)(*(lpGP + 1)) + (1 * sizeof(int))), *(int*)((char*)(*(lpGP + 1)) + (1 * sizeof(int))));
    puts("");

    printf("%p = %f\n", (void*)(&((float*)(lpGP[2]))[0]), ((float*)(lpGP[2]))[0]);
//  printf("%p = %f\n", (void*)((float*)(*(lpGP + 2)) + 0), *((float*)(*(lpGP + 2)) + 0));
//  printf("%p = %f\n", (void*)((char*)(*(lpGP + 2)) + (0 * sizeof(float))), *(float*)((char*)(*(lpGP + 2)) + (0 * sizeof(float))));

    printf("%p = %f\n", (void*)(&((float*)(lpGP[2]))[1]), ((float*)(lpGP[2]))[1]);
//  printf("%p = %f\n", (void*)((float*)(*(lpGP + 2)) + 1), *((float*)(*(lpGP + 2)) + 1));
//  printf("%p = %f\n", (void*)((char*)(*(lpGP + 2)) + (1 * sizeof(float))), *(float*)((char*)(*(lpGP + 2)) + (1 * sizeof(float))));

    getch();
    return 0;
}