asdasasa

#include <stdio.h>
#include <stdlib.h>
 main ()
{
unsigned char k=0x72;
unsigned char mask=0x1C;
unsigned char result, knew;
     result=k & mask;
     result=result>>2;
     printf("%s%d\n","Result 1 =" ,result);
     knew=k & ~mask;
     result=6<<2;
     knew=knew | result;
     printf("%s%x\n","Result 2 = 0x" ,knew);
     knew=0x80 ^ knew;
     printf("%s%x\n","Result 3 = 0x" ,knew);
     system("pause");
}