Question

In a C system, what is in a symbol table entry for a variable in addition to its name?

Answer 1

Symbol table is a data structure which is created by compiler that is used to keep the track of variable.

The symbol table contain Symbol name,Type and Scope in their table Enteries .

The symbol name is the variable name ,function name etc .

The type defined the datatype.

The scope defined the scope and visibilty of variable and function.

following are the example of symbol table

let us consider a code

int fun(int c)

{

double s = 0.5;

}

Now the Symbol Table for this code which is created by compiler is

Symbol name Type Scope

fun function int local scope

c int function parameter

s double function parameter

For any variable in c .The symbol table store the symbol name type and scope for the variable