#include <stdio.h>

int main() {
    int a = 0xA;//1010
    int b = 10;
    a = a & (1<<1);
    /*b = b ^ (1<<0);
    b = b ^ (1<<2);*/
    //or
    b = b ^ (1<<0) ^ (1<<2);

    int c = 0xABC;
    int extract1 = (c & 0xF00) >> 8;
    int extract2 = (c & 0x0F0) >> 4;
    
    printf("%d\n",a);
    printf("%X\n",b);
    printf("%X %X", extract1, extract2);
}