Problem with array of pointers

[Lekar]

I have a problem with the third element from notas:

#include <iostream.h>
#include <conio.h>

struct nota_musical
{
  char *nota;
};


int main()
{
  clrscr();
  // Array of pointers
  nota_musical *notas[7];

  char *notmusic[7] = {&quot;do&quot;, &quot;re&quot;, &quot;mi&quot;, &quot;fa&quot;, &quot;so&quot;, &quot;la&quot;, &quot;si&quot;};

  for (int i = 0; i < 7; i++)
       notas[i] -> nota = notmusic[i];
  for (int j = 0; j < 7; j++)
   cout << &quot;notas[&quot; << j << &quot;] -> nota &quot;  << notas[j] -> 
            nota << endl;
  getche();
  return 0;
}

When I run this code this appears :

notas[0] -> nota do
notas[1] -> nota re
notas[2] -> nota
notas[3] -> nota fa
notas[4] -> nota so
notas[5] -> nota la
notas[6] -> nota si

I can't find why the notas[2] element couldn't be assigned to the corresponding note (it says that it has a null value), and when I press a key to exit the program, it displays:

 " Abnormal program termination
   Null pointer assignment "

Where's the problem?
(I don't know if it this can be helpful but I'm using Borland Turbo C++ 3.0)

Thank you very much.

 

[paulfrance]

I think the reason that this doesn't work is because the line:

nota_musical *notas[7];

only creates an array of pointers to structure type nota_musical. The actual structures don't exist anywhere in memory so when you try to assign to them with,

for (int i = 0; i < 7; i++)
notas -> nota = notmusic;

there's no structure to actually assign to.

The only thing I don't understand how your program worked long enough to generate any output at all.

paulf

 

[Themuppeteer]

I thinkthat when you remove the * in
nota_musical *notas[7];
you should be fine...