2. A C++ compiler uses a symbol table to keep track of the identifiers that a program uses. When the compiler encounters an identifier, it searches the symbol table to see whether that identifier has already been encountered. If the identifier is new, it is inserted into the table. Thus, the symbol table needs only insertion and retrieval operations. Symbol tables are mostly implemented as hash tables, where an identifier is treated as a key for the hash function and the return value is the information about the identifier, such as its type and scope. Consider the following function: int sum(int a, int b) return a + b; Symbol Table for the Sum) function NAME TYPE SCOPE function global local sum a variable variable local Write a class called SymbolTable and implement it as a hash table, using chaining to resolve collisions. Use the hash function h(x) =x mod tableSize and the algorithm that involves hashing string with ordinal values, as described in the class to convert a variable into an integer x. Write a program to demonstrate your SymbolTable. %3D

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2. A C++ compiler uses a symbol table to keep track of the identifiers that a program uses. When the
compiler encounters an identifier, it searches the symbol table to see whether that identifier has
already been encountered. If the identifier is new, it is inserted into the table. Thus, the symbol table
needs only insertion and retrieval operations.
Symbol tables are mostly implemented as hash tables, where an identifier is treated as a key for the
hash function and the return value is the information about the identifier, such as its type and scope.
Consider the following function:
int sum(int a, int b)
return a + b;
Symbol Table for the Sum() function
NAME
ΤΥΡΕ
SCOPE
global
local
local
sum
function
a
variable
variable
Write a class called SymbolTable and implement it as a hash table, using chaining to resolve
collisions. Use the hash function h(x) =x mod tableSize and the algorithm that involves hashing
string with ordinal values, as described in the class to convert a variable into an integer x. Write a
program to demonstrate your SymbolTable.
Transcribed Image Text:2. A C++ compiler uses a symbol table to keep track of the identifiers that a program uses. When the compiler encounters an identifier, it searches the symbol table to see whether that identifier has already been encountered. If the identifier is new, it is inserted into the table. Thus, the symbol table needs only insertion and retrieval operations. Symbol tables are mostly implemented as hash tables, where an identifier is treated as a key for the hash function and the return value is the information about the identifier, such as its type and scope. Consider the following function: int sum(int a, int b) return a + b; Symbol Table for the Sum() function NAME ΤΥΡΕ SCOPE global local local sum function a variable variable Write a class called SymbolTable and implement it as a hash table, using chaining to resolve collisions. Use the hash function h(x) =x mod tableSize and the algorithm that involves hashing string with ordinal values, as described in the class to convert a variable into an integer x. Write a program to demonstrate your SymbolTable.
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