1 #include <stdio.h>

     2 

     3 int main()

     4 {

     5     int i;

     6     int last;

     7 

     8     last = getchar();

     9     do

    10     {

    11         /* Unsigned char cast to int */

    12         i = getchar();

    13         if (i == EOF)

    14             break;

    15         if (!(last == 0xcc && i == 0x81))

    16         {

    17             putchar(last);

    18         }

    19         else

    20         {

    21             putchar('\'');

    22             i = getchar();

    23             if (i == EOF)

    24                 /* We don't want the last putchar */

    25                 return 0;

    26         }

    27         last = i;

    28     } while(1);

    29     putchar(last);

    30 

    31     return 0;

    32 }