ponteiros-strings.c

/** 
 * @abstract: brincando com strings
 * @jeffotoni
 * @exemplo strings
 * @date: 2016
 */

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

#define MAX 5

/** somente testes de declarcoes */
typedef char string[];
typedef char *string10[];
typedef char *string20;

int main(){

  char *string1 = "abacate";
  char *vets[] = {"C","C++","NASM","PHP", "GO", "RUST", "JAVASCRIPT", "STOP", " "};
  int i;

  int tamanho = strlen(string1) + 1;

  char **array = (char**) malloc(tamanho*sizeof(char*));
  array[0] = string1;
  array[1] = string1; 
  printf("\n array: %s", array[0]);
  printf("\n array: %s", array[1]);
  puts("");


  char *string2 = "linguagem";
  char *array2[MAX];

  tamanho = strlen(string2) + 1;

  for(i = 0; i < MAX; i++){

    array2[i] = (char*) malloc(tamanho*sizeof(char));
    strcpy(array2[i], string2);
    printf("\n array2[%d] : %s", i, array2[i]);
    
  }

  puts("");

  char *array3[7];
  
  for (i = 0; i < 7; i++){

    tamanho = strlen(vets[i]) + 1;
    array3[i] = (char*) malloc(tamanho*sizeof(char));
    strcpy(array3[i], vets[i]);
  }


  ///listando o vetor..
  for (i = 0; i < 7; i++) {

      printf("\n array3[%d] : %s", i, array3[i]);
  }
  
  puts("");

  ///listando vetor
  char **ptr2 = vets;
  

  i = 0 ;
  while( **ptr2++ ){
      
    printf("\n vets:[%d]-> %s ", i, (*ptr2)++ );
     
     i++;
   }

   static int a[]={0,1,2,3,4};
   static int *p[]={a, a+1, a+2, a+3, a+4};

   int **ptr;

   ptr =p;

   **ptr++;
   printf("\n%d %d %d", ptr-p, *ptr-a, **ptr);

   *++*ptr; 
   printf("\n%d %d %d", ptr-p, *ptr-a, **ptr);

   ++**ptr;
   printf("\n%d %d %d", ptr-p, *ptr-a, **ptr);



  //memset(ptr, 0, 3 * 4 * sizeof(char*));  
  puts("");

  free(array);
  

  return 0;
}