/*

* rotate4 - Rotate x to the left by 4

* Examples: rotate4(0x87654321) = 0x76543218

* Legal ops: ~ & ^ | + << >> !

* Max ops: 10

* Rating: 2

*/

int rotate4(int x) {

return x << 4 | (x&0xff) >> 28;

}

Solution must be in C. I would also really appreciate any comments/explanations!