example1_simple_pointer.cpp

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#include <iostream>

int main() {
    int x = 42;
    int* ptr = &x;  // 'ptr' is a raw pointer to 'x'

    std::cout << "Value of x: " << x << std::endl;
    std::cout << "Value pointed to by ptr: " << *ptr << std::endl;

    *ptr = 100;  // Modify the value of 'x' through the pointer
    std::cout << "New value of x: " << x << std::endl;

    return 0;
}