.txt to ASCII Code Array

rudster816 (4)
How would I go about importing a text in to an array in ASCII code. Not the actual characters, but the number representation.

e.g. the .txt contains
"sample text"

I want it to load

115 97 109 112 108 101 32 116 101 120 116

in to a 2D array.

I dont really know how to approach this other than writing a separate program outside of what I want to do that loads each individual character and "manually" change it to a number.

Thanks
Duthomhas (13282)
Er, that's exactly what happens when you load strings from a file normally.
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#include <iostream>
using namespace std;

int main()
  {
  const char s[] = "Hello world!";

  for (unsigned n = 0; n < sizeof( s ) - 1; n++)
    cout << (int)s[ n ] << " ";
  cout << endl;

  return 0;
  }
 
72 101 108 108 111 32 119 111 114 108 100 33

If you want to copy a char array to an int array, use the copy() algorithm:
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#include <algorithm>
...
const char s[] = "Hello world!";
int xs[ sizeof( s ) - 1 ];

std::copy( s, s + sizeof( s ) - 1, xs );

Etc. Hope this helps.
rudster816 (4)
Thanks, that worked beautifully.

Another possibly noobish question. How would I convert an ASCII number taken from an array to its corresponding letter\symbol?

EDIT:

Figured it out (I think)
Last edited on
Duthomhas (13282)
You've got it.

The only difference between and ASCII value and what gets printed is whether or not you are looking at it as a char or an int.

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cout << (int)65 << endl;
cout << (char)65 << endl;

Enjoy!
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