Question

I wrote a small example to test my understanding of pointers and memory, however I was sure this would work but then it gave seg fault… Any idea what I am doing wrong? Add: I ran this code with other code.

#include <iostream>
using namespace std;

struct Card {

  int a;
  Card(int a) : a(a) { }

};

int main() {

  int **p;
  int **p2;
  int *a;
  int b =3;
  char ** cArray;
  Card **c = new Card*[5];
  for (int i = 0; i<5; i++)
     c[i] = new Card(1);


  a = &b;
  for (int i = 0; i< 10; i++) {
    p = &a;
    //  p2[i] = new int;
    *(cArray + i) = "string";
    cout << cArray[i]<< endl;
  }



  for (int i = 0; i< 10; i++) {
    // p2[i] = a; 
    cout << *a << endl;
  }

}    

Answer 1

char ** cArray;

cArray is an unintialized pointer to pointer. You cannot de-reference it.

*(cArray + i) = "string";