Objective-C Programming: The Big Nerd Ranch Guide

Other bitwise operators

For completeness, here are the other bitwise operators. These are less commonly used in Objective-C but good to know.

Exclusive-OR

You can exclusive-or (XOR) two bytes together to create a third. A bit in the third byte is 1 if exactly one of the corresponding bits in the input bytes is 1.

Figure 38.5  Two bytes bitwise-XORed together

This is done with the ^ operator. Add to main.c:

 ​ ​ ​ ​u​n​s​i​g​n​e​d​ ​c​h​a​r​ ​e​ ​=​ ​a​ ​^​ ​b​;​ ​ ​ ​ ​p​r​i​n​t​f​(​"​H​e​x​:​ ​%​x​ ​^​ ​%​x​ ​=​ ​%​x​\​n​"​,​ ​a​,​ ​b​,​ ​e​)​;​ ​ ​ ​ ​p​r​i​n​t​f​(​"​D​e​c​i​m​a​l​:​ ​%​d​ ​^​ ​%​d​ ​=​ ​%​d​\​n​"​,​ ...