Objective-C Programming: The Big Nerd Ranch Guide

Bitwise-AND

You can also bitwise-AND two bytes together to create a third. In this case, a bit on the third byte is 1 only if the corresponding bits in the first two bytes are both 1.

Figure 38.4  Two bytes bitwise-ANDed together

This is done with the & operator. Add the following lines to main.c:

#include <stdio.h>

int main (int argc, const char * argv[])
{
    unsigned char a = 0x3c;
    unsigned char b = 0xa9;
    unsigned char c = a | b;

    printf("Hex: %x | %x = %x\n", a, b, c);
    printf("Decimal: %d | %d = %d\n", a, b, c);

    unsigned char d = a & b;

    printf("Hex: %x & %x = %x\n", a, b, d);
    printf("Decimal: %d & %d = %d\n", a, b, d); return ...