CBSE Class 11 Informatics Practices Programming Guidelines Notes

PROGRAMMING GUIDELINES

Stylistic Guidelines

√ Use meaningful names for identifiers

√ Ensure clarity of expressions.

√ Use comment and indentation.

√ Insert blank lines and blank spaces.

Characteristic for a Good Program

√ Effective and efficient

√ User friendly

√ Self documenting code

√ Reliable

√ Portable

Stages of Program Development Process

A program development process is a step by step process where each stag contributes to building of an effective and efficient program.

Stages are as follows

√ Crack the problem

√ Code the algorithm

√ Compile the program

√ Execute the program

Types of Errors

√ Compile Time Error- Occurs during compile time. When a program compiles it sources code is checked for rules of programming language.

Its types are:-

1. Syntax error : it occurs when a grammatical rule of Java is violated

2. Semantic error: it occurs when statement are not meaningful.

√ Run Time Error: Occurs during the execution of the program.

√ Logical Error: Occurs due to wrong logic of a program.

PROBLEM SOLVING METHODOLOGY AND TECHNIQUES

Steps to creating a working program are:-

1. Understand the problem well

2. Analyze the problem to

a) Identify minimum number of inputs required for output

b) Identify processing components.

3. design the program by

a) Deciding step by step solution.

b) Breaking down solution into simple steps.

4. Code the program by

a) Identifying arithmetic and logical operation required for solution.

b) Using appropriate control structure such as conditional or looping control structure.

5. Test and Debug your program by

a) Finding error in it.

b) Rectifying the error.

6. Complete your documentation.

7. Maintain your program.

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