Introduction to Strings, 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

5.3.1 Introduction to Strings

• A sequence of characters is called a string.
• In C++, strings are stored in a one-dimensional array of char data types. It is used to store words, names, addresses, etc.
• The last character of a string is the character “\0” which is called a null character. It is an escape sequence that tells the compiler where the string is end.
• It is automatically appended at the end of the string.
• As the “\0” character shows the end of a string, this means that the size of a string will be one less than the size of the array.

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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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