C++ Programming: From Problem Analysis to Program Design
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN: 9781337102087
Author: D. S. Malik
Publisher: Cengage Learning
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![画像:3. | The following program undergoes scope checking using a stack of symbol tables: 1. void main() { 2. 5. 6. 7. 8. int a; int b%3B int c%;B if (a == b) { float c%;B for (int c = 1; c <10%;B c++ ) { cout << a; 9. } 10. } 11. 12. 13. int a; else { } /* else */ } /* main */ (a) [10] Draw the symbol tables created for this program as follows: List in each sym- bol table all the identifiers in that scope as pairs (identifier,type). Then draw the links (pointers) between the symbol tables that establish the stack structure. (b) [5] Let the scope checking algorithm process line 8 of the program. Identify in your answer to the previous question the symbol table corresponding to the current scope as well as the symbol tables corresponding to all the open scopes. Explain then how are the symbol tables inspected to obtain the type of variable a.](https://content.bartleby.com/qna-images/question/10eebb53-c222-4ba4-91a2-e54084fe388d/5924bf84-19eb-4b5f-96b6-cafd3b7e1a95/8zrgya9_thumbnail.png){kind=link}
Transcribed Image Text:3.
| The following program undergoes scope checking using a stack of symbol tables:
1.
void main() {
2.
5.
6.
7.
8.
int a; int b%3B int c%;B
if (a == b) {
float c%;B
for (int c = 1; c <10%;B c++ ) {
cout << a;
9.
}
10.
}
11.
12.
13.
int a;
else {
} /* else */ } /* main */
(a) [10] Draw the symbol tables created for this program as follows: List in each sym-
bol table all the identifiers in that scope as pairs (identifier,type). Then draw the links
(pointers) between the symbol tables that establish the stack structure.
(b) [5] Let the scope checking algorithm process line 8 of the program. Identify in your
answer to the previous question the symbol table corresponding to the current scope as
well as the symbol tables corresponding to all the open scopes. Explain then how are
the symbol tables inspected to obtain the type of variable a.
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