C & C++ Programming
Computer ScienceChapter 4 — Functions and Modular Programming
Lesson 4.4 : Call by Value and Call by Reference
Reading & Interactive Lesson
Call by Value and Call by Reference
Reading Material & Notes
Call by Value and Call by Reference
Arguments can be passed to functions using different techniques.
Call by Value
A copy of the value is passed to the function. Changes do not affect the original variable.
void change(int x)
{
x = 100;
}Call by Reference in C++
void change(int &x)
{
x = 100;
}References allow a function to modify the original variable.
Course Curriculum
10 Chapters • 50 Lessons
Chapter 1 — Introduction to C and C++
5 Lessons
Chapter 2 — Variables, Data Types and Operators
5 Lessons
Chapter 3 — Conditional Statements and Loops
5 Lessons
Chapter 4 — Functions and Modular Programming
5 Lessons
Chapter 5 — Arrays and Strings
5 Lessons
Chapter 6 — Pointers and References
5 Lessons
Chapter 7 — Structures, Unions and Enumerations
5 Lessons
Chapter 8 — Object-Oriented Programming in C++
5 Lessons
Chapter 9 — Inheritance, Polymorphism and Templates
5 Lessons
Chapter 10 — File Handling and Mini Projects
5 Lessons