63

Recur

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recur.cpp
  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. void printd( int );
  6.  
  7. void printi( int i )
  8. {
  9.     if ( i < 0 )
  10.     {
  11.         cout.put( '-' );
  12.         i = -i;
  13.     }
  14.     printd( i );
  15. }
  16.  
  17. void printd( int i )
  18. {
  19.     int d = i/10;
  20.     if ( d )
  21.         printd( d );
  22.     cout.put( char(i%10 + '0') );
  23. }
  24.  
  25. int main()
  26. {
  27.     int x;
  28.  
  29.     x = 12345;
  30.     cout << x << "=";
  31.     printi( x );
  32.     cout << endl;
  33.  
  34.     x = -x;
  35.     cout << x << "=";
  36.     printi( x );
  37.     cout << endl;
  38.  
  39.     x = 0;
  40.     cout << x << "=";
  41.     printi( x );
  42.     cout << endl;
  43. }

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