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CHAPTER 1 BASIC FUNCTIONS
1.17.2 Referring to Variable of C Language
C language variables can be specified using the same descriptions as in the source
program written in C language.
■ Specifying C Language Variables
C language variables can be specified using the same descriptions as in the source program. The address of C
language variables should be preceded by the ampersand symbol "&". Some examples are shown in the Table
1.17-1.
Table 1.17-1 Examples of Specifying Variables
Example of Variables
Example of
Specifying
Variables
Semantics
Regular Variable int data; data Value of data
Pointer char *p; *p Value pointed to by p
Array char a[5]; a[1] Value of second element of a
Structure struct stag {
char c;
int i;
};
struct stag st;
struct stag *stp;
st.c
stp- >c
Value of member c of st
Value of member c of the structure
to which stp points
Union union utag {
char c;
int i;
} uni;
uni.i Value of member i of uni
Address of variable int data; &data Address of data
Reference type int i;
int &ri = i;
ri Same as i