Answered: PROGRAM 4: Double Table Write the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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PROGRAM 4: Double Table
Write the program in HLA. Using the ROL instruction to perform multiplication, write a program to produce a double table. This table should be built from a single int8 value provided by the user and print 3 rows from the starting value, each offset by one from the starting value. In that column, the pattern of doubled numbers should be calculated by ROL instructions. For example, the following output should be produced when the user inputs the starting value 4:

Gimme a starting value: 4
Double Table
4: 8 16 32
5: 10 20 40
6: 12 24 48

For example, the following output should be produced when the user inputs the starting value 12:

Gimme a starting value: 12
Double Table
12: 24 48 96
13: 26 52 104
14: 28 56 112

(Note: To receive full credit, you must use ROL to solve this problem.)
(Hint: Again, please don't worry too much about the spacing in the table. As with the prior week's assignment, the goal is to practice working with HLA...

**PROGRAM 4: Double Table**

Using the ROL instruction to perform multiplication, write a program to produce a double table. This table should be built from a single int8 value provided by the user and print 3 rows from the starting value, each offset by one from the starting value. In that column, the pattern of doubled numbers should be calculated by ROL instructions. For example, the following output should be produced when the user inputs the starting value 4:

```
Gimme a starting value: 4
Double Table
4: 8 16 32
5: 10 20 40
6: 12 24 48
```

For example, the following output should be produced when the user inputs the starting value 12:

```
Gimme a starting value: 12
Double Table
12: 24 48 96
13: 26 52 104
14: 28 56 112
```

(Note: To receive full credit, you must use ROL to solve this problem.)

### Explanation

This program uses the ROL (Rotate Left) instruction for multiplication. The user inputs a starting integer, and the program displays a table where each row starts with an incremented value from the starting value. Each value in the row is a result of a doubling sequence calculated using the ROL instruction, showcasing the doubling effect in binary operations.

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