Use bit wise operators

In C language

27 28 /* prints the half-nybbles (i.e. 2 bit values) of x, 29 L one half-nybble at a time / 30 Evoid print half_nybbles (unsigned int x) ( 31 L .32 33 returns the reverse of the half-nybbles of i */ 134 un signed int reverse-half-nybbles (unsigned int i) { 135 return Ou; 136 L 137 138 /* returns 1 if x