// an example of an array of strings

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

int string_length(char * my_string)
{
  int counter = 0;
  while(1)
  {
    if (my_string[counter] != 0)
    {
      counter++;
    }
    else
    {
      break;
    }
  }

  return counter;
}


char * copy_string(char * input)
{
  int length = string_length(input);
  char * result = (char *) malloc(sizeof(char) * (length + 1));

  int i;
  for (i = 0; i <= length; i++)
  {
    result[i] = input[i];
  }

  return result;
}

// initializing an array of strings in a function.
// see example10.cpp for a simpler version, that 
// initializes an array of string without calling a function.
void foo(char *** a)
{
  *a = (char **) malloc(sizeof(char*) * 3);
  (*a)[0] = copy_string("yes");
  (*a)[1] = copy_string("no");
  (*a)[2] = copy_string("maybe");
}


int main()
{
  char ** a;

  foo(&a);

  printf("a[0] = %s\n", a[0]);
  printf("a[1] = %s\n", a[1]);
  printf("a[2] = %s\n", a[2]);
}