Extract register RS from MIPS R-format inst

// C bitwise lecture examples
#include <stdio.h>
int main()
{ int x,y;   //to extract register RS from MIPS r-format

  printf("0x%X \n", y = 0x8d080005 << 6);
  printf("0x%X \n", y >> 27);

  return 0;
}