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In this section, we'll talk
about characters and strings.

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As we've already seen, the
character type can hold values

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that represent characters.

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These values are basically integers
that match to a character set

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like the ASCII character set.

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And we've also seen that strings
are sequences of characters.

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C++ supports two types of strings,
c-style strings and c++ strings.

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So will first look at
the cctype library.

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This is a library a very simple
but very useful functions

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that work with characters.

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For example, we can test
characters to see if they're

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uppercase to lowercase, numeric,
alphanumeric, punctuation and more.

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We can also convert characters
between lower and uppercase.

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After we learn about the cctype
functions, we'll talk about strings.

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As I said earlier, you can think of
strings is a sequence of characters.

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So far, we've only used
string literals, which were

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represented as a sequence of
characters inside double quotes.

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I'll discuss both c-style strings
and c++ strings in this section and

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give you the basics of using each.

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However, you should be using
c++ strings in modern c++.

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I think you'll understand why
at the end of this section.

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First we'll see what c-style
strings are and how they

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represented in memory.

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Then we'll see how to work with
c-style strings using some of the

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string functions available in the
cstring and cstandard lib libraries.

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Then we'll learn about c++ strings.

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C++ strings are objects,
just like are vectors were.

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And they're used using an
object-oriented style of programming.

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In this section, will learn
how to declare, initialize,

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assign, compare and use some of
the other c++ string methods.

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Methods are functions
that work with objects.

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So let's look at c-style
strings first in the next video.