Consider the following program written in C:
// Declare an external function extern double bar(double x); // Define a public function double foo(int count) { double sum = 0.0; // Sum all the values bar(1) to bar(count) for (int i = 1; i <= count; i++) sum += bar((double) i); return sum; }
A C compiler that parses this code will contain at least the following symbol table entries:
Symbol name | Type | Scope |
---|---|---|
bar |
function, double | extern |
x |
double | function parameter |
foo |
function, double | global |
count |
int | function parameter |
sum |
double | block local |
i |
int | for-loop statement |
In addition, the symbol table will also contain entries generated by the compiler for intermediate expression values (e.g., the expression that casts the i
loop variable into a double
, and the return value of the call to function bar()
), statement labels, and so forth.
https://en.wikipedia.org/wiki/Symbol_table
时间: 2024-10-09 11:37:10