Objective-C Programming: The Big Nerd Ranch Guide

39 C Strings

Given the choice, an Objective-C programmer will always choose to work with NSString objects rather than C strings. However, sometimes we do not have a choice. The most common reason we end up using C strings? When we access a C library from within our Objective-C code. For example, there is a library of C functions that lets your program talk to a PostgreSQL database server. The functions in that library use C strings, not instances of NSString.

char

In the last section, we talked about how a byte could be treated as a number. We can also treat a byte as a character. As mentioned earlier, there are many different string encodings. The oldest and most famous is ASCII. ASCII (American Standard Code for Information ...