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unsigned int k_printf(char *message, unsigned int line) // PrintF for green on black.
{
   char *vidmem = (char *) 0xb8000; // Address in memory where Video RAM begins.
   unsigned int i=0;

   i=(line*80*2); // 80 Characters in Current Line, 2 Bytes per Character

   while(*message!='\0') // Stop at null.
   {
      if(*message=='\n') // Check for a new line.
      {
         line++; // Increase current line.
         i=(line*80*2); // Reset i.
         *message++; // Walk through the message variable with pointer.
      } else {
         vidmem[i]=*message; // Adjust current address in video memory to store current character.
         *message++; // Walk through the message variable with pointer.
         i++; // Increase current byte by one.
         vidmem[i]=GREEN_TXT; // Adjust current address in video memory to store current hex color code.
         i++; // Increase current byte by one.
      };
   };

   return(1); // Executed successfully.
};

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        unsigned char i;
   for(;;)
   {
      i = getch();
      k_printf(&i,3);
   };

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   for(;;)
   {
      i = getch() && "\0";
      k_printf(&i,3);
   };

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   for(;;)
   {
      i = getch() && '\0';
      k_printf(&i,3);
   };

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char this_is_a_string[]={'H','e','l','l','o',0};
char *this_is_also_a_string="Hello";

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char tmpstr[2]={0,0};
tmpstr[0]=getch();
printk(tmpstr);