Question

A computer program is a collection of instructions that performs a specific task when executed by a computer. Most computer devices require programs to function properly. There are various structures included in computer programs making them readable and concise. With this in mind, answer the following questions:

1. List FIVE (5) reasons why a comment should be placed at the start of the program. (5)
2. Discuss the meaning of a variable declaration and the appropriate ways to name variables. (5)
3. Explain in detail extreme precision in programming. (5)
4. Provide ANY FIVE (5) examples of high-level programming languages. (5)

Answer 1

Please find the required answers as the following:

=== (1) ===
Reasons for placing comment at the start of the program:
- Program planning and review
- Code description for context declaration
- Resource inclusion
- Description of metadata available for the program
- Automatic generation of code documentation
- Helps in debugging the code by authors/editors

=== (2) ===

In most of the programming languages, variable declaration is often performed at the beginning of its "main" or "drive" code/script segment. Declaring a variable indcates its type and value that is going to be used later in the program for logical and mathematical manipulations.

In general, (as the programming language of context is not giving). A variable declartion cotains:
- Data type of variable (integer, floating point number, character etc.)
- Variable name (Different languages have different syntatic restriction on an allowed variable name)
- Variable value. This is most of the times an optional value (according to its data type) to be given to a variable at the time of its first instatiation.

=== (3) ===

Extreme precision can mean two things in programming as the exact context is not given here:
1) One, it means the type of programming that while executing a sequence of instructions also keep other modifications with the code or other variables into consideration. In other words, it keeps the effect of any runtime modification in other code segments into account while executing a particular code section.
2) Second, a programming sytle that deals with the usage of high precision data type variables for mathematical manipulation and stores and propagates the results without the loss mathematical precision.

=== (4) ===

Java, C, C++, Python, C#