#include <stdio.h>
#include "mylib.h"

/*
Description: Write a program to copy its input to its output, replacing
each tab by \t, each backspace by \b, each backslash by \\, and each
strinf of one or more blanks by a single blank. This makes
tabs and backspaces visible in an unambiguous way.
Author     : ******************
Date       : September 3, 2006
*/

/* count lines in input */
int main( int argv, char *argc[] )
{
   /*
    * Variables declarations
    */
   sh_int last_c; /* ascii value of the last character */
   sh_int curr_c; /* ascii value of the current character */
   sh_int state;  /* state, do we have a special character or not? */

   printf( "Enter the text you wish to convert to a printf string and hit ctrl+d to see\n  theoutput\n" );

   printf( "-------------------------------------------------------------------------------\n" );
   while( ( curr_c = getchar(  ) ) != EOF )
   {
      state = 0;
      if( curr_c == '\\' )
      {
         state = 1;
         putchar( '\\' );
         putchar( '\\' );
      }
      if( curr_c == '\t' )
      {
         state = 1;
         putchar( '\\' );
         putchar( 't' );
      }
      if( curr_c == '\b' )
      {
         state = 1;
         putchar( '\\' );
         putchar( 'b' );
      }
      if( curr_c == '\n' )
      {
         state = 1;
         putchar( '\\' );
         putchar( 'n' );
      }
      if( curr_c == ' ' )
      {
         if( last_c == ' ' )
         {
            state = 1;
         }
         last_c = ' ';
      }
      if( !state )
      {
         putchar( curr_c );
      }
   }
   printf( "\n-------------------------------------------------------------------------------\n" );
   printf( "Your printf string is above\n" );
   return 0;
}