Bsp.: Implementation

compress.cc

// Beispiel: Simple compression
// Verwendung: cat Filename | Thisprog 
#include <iostream.h>

void out(const int count, const char c)
{
  if (c == '\\') 
    cout << "\\" << c << c << count + 1 << flush;
  else
    cout << "\\" << c << count + 1 << flush;
}

void out(const char c)
{
  if (c == '\\')
    cout << c << c << flush;
  else
    cout << c << flush;
}

int main(void) 
{
  char p, c;
  int count;

  if (cin.read(&p, 1))
  {
    count = 0;
    while (cin.read(&c, 1)) 
    {
      if ( p == c )
      {
        count++;
        continue;
      }
      if (count) 
      {
        out(count, p);
        count = 0;
      }
      else
        out(p);
      p = c;
    }
    if (count)
      out(count, p);
    else 
      out(p);
  }
}

5. Einheit