Chapter 12 Reading Assignment

Chapter 12 is easy. It focuses on the details of using character data in your programs. You can scan sections 12.6, 12.7 and 12.9... they show applications using the fancy string functions defined in Chapter 12. BTW, if you're still a little foggy on operator overloading, then section 12.9 provides some nice examples.

Section 12.1 - C-strings

What is the null terminator (or '\0')? How is it used in C-strings?

What is the difference between '\0' and '0'?

Section 12.2 - C-string functions

What do each of the following C-string functions do:

• strlen
• strcat
• strcpy, strncpy
• strcmp
• strstr

Section 12.3 - String/numeric conversion

What do these do:

• atoi
• atol
• atof
• itoa

Section 12.4 - Character testing

And these:

• isalpha
• isalnum
• isdigit
• islower
• isprint
• ispunct
• isupper
• isspace

Section 12.5 - Character case conversion

And these (sigh):

• toupper
• tolower

Section 12.8 - The C++ string class

What is the big difference in how C-strings and C++ strings are defined/represented?

List an advantage of C-strings... list one advantage of C++ strings.

For each of the following, write a code fragment using both C-strings and the C++ string class:

• define a string variable
• append two strings
• get the length of a string
• compare two strings
• get the i'th character from a string
• read a string using getline
• read or write a string using the stream operators, >> and <<