CBSE Class 9 AI (Artificial Intelligence) | 21. IF, FOR, WHILE by Abraham | Learn Smarter
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Knowledge
21. IF, FOR, WHILE

The chapter focuses on critical programming constructs essential for decision-making and repetition in logical processes, highlighting the IF statement, FOR loop, and WHILE loop. It explains the syntax, usage, and distinctions between these constructs while providing examples for clarity. Additionally, it covers nested structures, emphasizing that these programming tools are foundational for developing intelligent systems in artificial intelligence.

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Sections

  • 21

    If, For, While

    This section covers three fundamental constructs in programming—IF statements for decision-making, FOR loops for fixed repetition, and WHILE loops for conditional repetition.

    Learning Practice

  • 21.1

    The If Statement

    The IF statement is a fundamental programming construct that enables decision-making in code based on specific conditions.

    Learning Practice

  • 21.1.1

    What Is The If Statement?

    The IF statement is a fundamental programming construct used for decision-making in AI and programming.

    Learning Practice

  • 21.1.2

    Syntax

    The section covers the syntax of key programming constructs: IF statements, FOR loops, and WHILE loops used in decision-making and repetition in programming.

    Learning Practice

  • 21.1.3

    If-Else Statement

    The IF-ELSE statement allows programs to execute different instructions based on whether a specific condition is true or false.

    Learning Practice

  • 21.1.4

    If-Elif-Else Ladder

    The IF-ELIF-ELSE ladder is a programming construct that allows checking multiple conditions sequentially, enabling more complex decision-making in programming.

    Learning Practice

  • 21.2

    The For Loop

    The FOR loop is a programming construct that allows for the repetition of a block of code a specified number of times, making it essential for tasks where the number of iterations is known.

    Learning Practice

  • 21.2.1

    What Is The For Loop?

    The FOR loop in programming is used to repeat a block of code a predetermined number of times.

    Learning Practice

  • 21.2.2

    Syntax

    This section covers the syntax of control structures in programming, specifically focusing on the IF statement, FOR loop, and WHILE loop, which are essential for decision-making and iteration.

    Learning Practice

  • 21.2.3

    Explanation

    This section explains the IF statements and their role in decision-making within programming.

    Learning Practice

  • 21.2.4

    Using For With Lists

    The section covers the use of the FOR loop to iterate over lists in programming, specifically emphasizing its syntax and application.

    Learning Practice

  • 21.3

    The While Loop

    The WHILE loop is a fundamental programming construct that repeats a block of code as long as a specified condition is true.

    Learning Practice

  • 21.3.1

    What Is The While Loop?

    The WHILE loop is a programming construct used to repeat a block of code as long as a specified condition remains true.

    Learning Practice

  • 21.3.2

    Syntax

    This section outlines the syntax for IF, FOR, and WHILE constructs in programming, fundamental for creating logical decision-making processes.

    Learning Practice

  • 21.4

    Difference Between For And While

    This section highlights the key differences between FOR loops and WHILE loops in programming, focusing on their use cases, syntax, and control mechanisms.

    Learning Practice

  • 21.5

    Nested If And Loops

    This section covers the concept of nesting IF statements within loops and vice versa, illustrating how to create complex decision-making structures in programming.

    Learning Practice

References

ch21.pdf

Class Notes

Memorization

What we have learnt

  • IF is used for decision-mak...
  • IF-ELSE and IF-ELIF-ELSE al...
  • FOR is used when the number...

Final Test

Revision Tests