#include<stdio.h>
#include<stdlib.h>

int main()
{
    int i,z;
    for(i=0;i<4;i++)
    {
    for(z=0;z<4;z++)
    {
    short int a=i,b=z;
    short int R;
    short int B0 = b&1;     //B0 = LSB of variable b
    short int B1 = (b&2)>>1;    //B1 = second LSB of variable b
    short int A0 = a&1;     //A0 = LSB of variable a
    short int A1 = (a&2)>>1;    //A1 = second LSB of variable a
    R = (B0&A0)|(((B0&A1)^(B1&A0))<<1)|(((B1&A1)^((B0&A1)&(B1&A0)))<<2)|(((B1&A1)&(B0&A1)&(B1&A0))<<3);
    printf("A = %d B = %d Result = %d\n\n",a,b,R);
    }}
    return 0;
}