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Strings in C

Terms in this set (13)

Strings in C
ANSI C does not have a string data type.
Strings in ANSI C
Strings are stored as sequences of ASCII characters declared as an array of char.
How to use strings in C
The header file string.h contains prototypes and declarations needed to use string library functions.
Two types of data "strings" in C
Strings stored as string literals and strings which are arrays of characters
First type of string in C
Strings stored as string literals are "read only" strings including anything within double quotes that is not allocated as an automatic or static variable.
First type of string in C (continued)
String literals are terminated with a NULL character and automatically inserted when defining with "".
Second type of string in C
Char array strings are read-write strings and must be defined with a null terminator.
Second type of string in C (continued)
When defining a string ASCII char by ASCII char, we must explicitly add null terminator, but not when defining string using "".
Declaring first type of string
char *string1 = "Go Bucks!";
What can change in the first declaration?
string1 can change, but "Go Bucks!" can't because "Go Bucks!" is stored as a string literal (or string constant)
Declaring second type of string
char string2[10] = "Go Bucks!"
What can change in the second declaration?
"Go Bucks!" can change because it is stored as an array of characters, but string2 can't because it is a constant pointer to the character array.
Where is the second string stored
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