Bit shift operator Post: 302087677

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Top Forums Programming Bit shift operator Post 302087677 by matrixmadhan on Tuesday 5th of September 2006 12:22:07 AM

09-05-2006

Registered User

Quote:

Originally Posted by naan

Can someone pls tell me how is the operation different in the following two code snippets?

main()
{
int temp=20742;

short temp1;
temp1 = temp << 8;
printf("The vaue is %d\n",temp1>>8);}

result:6

main()
{
int temp=20742;

short temp1;
temp1 =(temp << 8)>>8;
printf("The vaue is %d\n",temp1);}

result: 20742

If I want to do the operation that I have done in the first code snippet in a single line without using any temp variables, how do I do it?

Thanks,
Anitha

you have used short datatype for temp1,
sizeof short datatype=2
sizeof int datatype=4

use as int temp1

matrixmadhan

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ustrtok

ustrtok(3alleg4)						  Allegro manual						  ustrtok(3alleg4)

NAME

       ustrtok - Retrieves tokens from a string. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       char *ustrtok(char *s, const char *set);

DESCRIPTION

       This  function  retrieves  tokens  from	`s'  which  are  delimited by characters from `set'. To initiate the search, pass the string to be
       searched as `s'.  For the remaining tokens, pass NULL instead. Warning: Since ustrtok alters the string it is parsing,  you  should  always
       copy  the  string  to  a temporary buffer before parsing it. Also, this function is not re-entrant (ie. you cannot parse two strings at the
       same time). Example:

	  char *word;
	  char string[]="some-words with dashes";
	  char *temp = ustrdup(string);
	  word = ustrtok(temp, " -");
	  while (word) {
	     allegro_message("Found `%s'
", word);
	     word = ustrtok(NULL, " -");
	  }
	  free(temp);

RETURN VALUE

       Returns a pointer to the token, or NULL if no more are found.

SEE ALSO

       uconvert(3alleg4), ustrchr(3alleg4), ustrrchr(3alleg4), ustrstr(3alleg4), ustrpbrk(3alleg4), ustrtok_r(3alleg4),  allegro_message(3alleg4),
       ustrncpy(3alleg4), exgui(3alleg4)

Allegro 							   version 4.4.2						  ustrtok(3alleg4)