ansi_c_pg47_ch02_ex08.c

/*
 * Exercise 2-8.
 * lWrite a function rightrot(x,n) that returns the value of the integer x
 * rotated to the right by n positions.
 */


#include <stdio.h>

unsigned int
rightrot(unsigned int x, int n) {

	unsigned int sz = sizeof(unsigned int)*8;
	return (x>>n) | (x<<(sz - n));

}

int
main() {
	unsigned int x,y;
	x = 0x0f;
	y = rightrot(x,2);
	printf("y = %X\n", y);
}