Jan 2, 2012

K & R C Programs Exercise 2-8.

K and R C, Solution to Exercise 2-8:
 K and R C Programs Exercises provides the solution to all the exercises in the C Programming Language (2nd Edition) You can learn and solve K&R C Programs Exercise.
C Program that returns the value of the integer x rotated to the right by n bit positions. Read more about C Programming Language .
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unsigned rightroot(unsigned x, int n)
 int wordlength(void);
 int rbit;           //rightmost bit

  rbit=(x & 1)<<(wordlength()-1);
 return x;
 //word length computes the wor lengt of machine
 int wordlength()
  int i;
  unsigned v = (unsigned~0;
  for(i = 1;(v = v >> 1) > 0;i++)
  return i;
 //main function to test the program,, you can try in different ways!
#include <stdio.h>

 int main(void)
  unsigned x;
  int n;

  for(x = 0; x < 200; x += 25)
   for(n = 1; n < 8; n++)
    printf("%u, %d: %u\n", x, n, rightrot(x, n));
  return 0;

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