How do I use pointers in C++?

How do I use pointers in C++?

Pointers in C++ are variables that store the memory address of another variable. Would you like to see an example?

Yes, please provide an example of using pointers.

Sure! Here's a simple example:

int main() {
    int var = 20;  // Declare an integer variable
    int *ptr;     // Declare a pointer variable
    ptr = &var;   // Store the address of var in ptr

    // Output the value of var using the pointer
    std::cout << "Value of var: " << *ptr << std::endl;
    return 0;
}

This code declares an integer and a pointer, then uses the pointer to access the value of the integer.

What are the advantages of using pointers?

Pointers allow for dynamic memory allocation, efficient array handling, and the ability to modify variables from different functions. They are essential for data structures like linked lists.