Chapter 9 Computer Science

address

A value that specifies the location of a variable in memory.

dereferencing

Locating an object when a pointer to the object is given

Pointer Syntax

* operator

access location to which pointer points

& operator (used with variable)

yields a memory address

pointer to nth array element

a[n] or *(a + n)

C string

An array of char values

C string declaration

char charArr[] = "word"

strlen(s)

Returns the length of s

strcpy(t, s)

Copies the characters from s into t.

strncpy(t, s, n)

Copies at most n characters from s into t.

strcat(t, s)

Appends the characters from s after the end of the characters in t.

strncat(t, s, n)

Appends at most n characters from s after the end of the characters in t.

strcmp(s, t)

Returns 0 if s and t have the same contents, a negative integer if s comes before t in lexicographic order, a positive integer otherwise.

' '

The space character

'\n'

The newline character

'\0'

The null terminator of a string