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C++ lessons (21/42)

C++ — References

Basic reference

int x = 10;
int &ref = x;
ref = 20;  // x is now 20

Reference as parameter

void swap(int &a, int &b) {
    int temp = a;
    a = b;
    b = temp;
}

Const reference

void print(const string &str) {
    cout << str << endl;
}

Mini Practice

  1. Create references
  2. Use in functions
  3. Practice const references
  4. Compare with pointers

Up Next

Continue with Functions - Function syntax.

Related Topics

StructuresPointersFunctionsFunction Parameters

Frequently Asked Questions about References

What is References in C++?

References is a fundamental concept in C++. This lesson explains it step by step with clear examples, making it easy for beginners to understand.

How do I learn References?

Start by reading the explanation above, then try the code examples. Practice by modifying the examples and experimenting with different values. Hands-on practice is the best way to learn References.

Why is References important in C++?

References is essential for C++ development. Understanding this concept will help you write better code and solve real-world problems more effectively.