CS 241:
Control Structures
Homework 1 (Solution)
Assigned: Thu. 10/28/04
Due: Thu. 11/04/04

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1. [20 points] Problem #7 of Chap. #1 on pg. 16 of the textbook.
   
   
• [Answer] 3 reasons for studying Pascal
1. Pascal's program structure is a reasonable approximation of English.
2. Pascal supports and encourages the use of descriptive words for variables and data types.
3. Pascal facilitates good problem-solving habits.



2. [20 points] Problem #14 of Chap. #1 on pg. 16 of the textbook.
   
   
• [Answer] The sequence of used to solve a problem is a(n)
Algorithm



3. [20 points] Problem #21 of Chap. #1 on pg. 16 of the textbook.
   
   
• [Answer]
1. Source Code
2. Object Code



4. [20 points] Problem #1 of Chap. #2 Exercises 2.2 on pg. 39 of the textbook.
   
   
• [Answer]
A valid identifier must begin with a letter of the alphabet followed by an optional number (i.e. 0 to n) letters or digits.



5. [20 points] Problem #21 of Chap. #2 Exercises 2.2 on pg. 39 of the textbook.
   
   
• [Answer] The three main sections of a Pascal program are:
1. The Program Heading
2. The (Optional) Declaration Section
3. The Executable Section

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