Introduction to Arrays, Chapter - 5 Arrays and String

Computer Science SLO Based Key Point Notes

👉👉👉 Computer Science 12th Class Notes (Main Page)

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Unit 5: Arrays and String

5.1. Introduction to Arrays:

• Sometimes we need to group together different data items/values of the same data type OR
• Sometimes it is necessary to process a collection of values that are related in some way, for example, a list of student marks or a collection of measurements resulting from some experiment.
• Processing such collections of data using only simple variables can be extremely difficult. 
• This mechanism is achieved in C using Arrays.

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5.1. Introduction to Arrays:

5.1.1 Comcept of an Array:

5.1.2. Declaring (defining) an Array

5.1.3. Initialization of Array

5.1.4. Using Arrays in Programs:

5.1.5. The Sizeof() Function

5.2.1. Introduction of Two-Dimensional Arrays

5.2.2. Defining and Initializing a Two-Dimensional Array:

5.2.3. Accessing and Filling a 2D array

5.3.1 Introduction to Strings

5.3.2 Defining (declaration) a String

5.3.2 Initializing a String

5.4 Commonly used String Function

Chapter 5 (Complete Key Point Notes)

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👉👉👉 Computer Science 12th Class Notes (Main Page)

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(National Book Foundation - As Federal Textbook Board, Islamabad 

Based on National Curriculum Pakistan 2026-2027 and Onward prescribed by Federal Board of Intermediate and Secondary Education, Islamabad, and All Pakistan Boards) 

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