characters after console entry

[jleach]

Hi,

I'm trying to find some footing with incput from the console, and have a question about the "remaining characters" from an input string. Say I buffer an array to take 16 characters, and the user inputs 10. The remaining 6 are filled with what seems to be gibberish... can someone explain where this comes from?

// definitions
int main()
{

  char s[15];

  cout << "Enter some characters... ";
  cin.get(s, 15);
  cout << endl << s << endl;

  //PrintChars(s);
  DocumentChars(s);

  return 0;
}

void DocumentChars(char s[15])
{
  int iAscVal;
  for (int i=0; i<16; i++)
  {
    iAscVal = int(s[i]);
    cout << "[" << i << "]ASCII: " << iAscVal
         << "\tCharacter: " << s[i] << endl;
  }
}

Enter some characters... asd fgh jkl

asd fgh jkl
[0]ASCII: 97    Character: a
[1]ASCII: 115   Character: s
[2]ASCII: 100   Character: d
[3]ASCII: 32    Character:
[4]ASCII: 102   Character: f
[5]ASCII: 103   Character: g
[6]ASCII: 104   Character: h
[7]ASCII: 32    Character:
[8]ASCII: 106   Character: j
[9]ASCII: 107   Character: k
[10]ASCII: 108  Character: l
[11]ASCII: 0    Character:
[12]ASCII: -96  Character: á
[13]ASCII: -3   Character: ²
[14]ASCII: 127  Character: ⌂
[15]ASCII: 0    Character:

Process returned 0 (0x0)   execution time : 5.772 s
Press any key to continue.

Output line 11 shows the null-terminator, but where to 12-15 come from?

Many thanks,
Jack

[Bazzy]

They are uninitialized characters, they contain whatever was present in the memory where your array is located

[jleach]

Ahh, that's it. Thank you Sir