5.1.1. Concept of an Array:, Chapter - 5, Arrays and String, HSSC-II (12th Class) Computer Science Key Point Notes

12th Class (HSSC-II) Computer SLO Based Key Point Notes

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Unit 5: Arrays and String

5.1.1 Comcept of an Array:

• An array is composed/group of variables (or elements) of the same data type stored in a consecutive memory location which can be referenced through the same variable name (or array name)
• Each data element or variable of the array has an associated index number (or subscript number).
• To refer to an individual data element/item of the array, we use subscripts, the number in the brackets following the array name.
• The number specifies the element’s position in an array. In C, the numbering is started from 0. For example marks[4] = 83;  stores the value 83 in the fifth location of the array.

Example: An array of integer data types that group together 6 variables which store the marks of 6 six different students.

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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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