#include using namespace std; int main() { int var = 5; // Declare the variable and assign it a value int *p; // Declare the pointer p = &var; // Assign the variable address to the pointer cout << "Get the value of var directly. "; cout << "This is " << var << endl; // Outputs the value of var cout << "Get the value of var using the pointer. "; cout << "This is " << *p << endl << endl; // Outputs the value of the variable stored in the pointer p ++var; // Increase the value of the variable cout << "Increase the value of the variable." << endl; // If we increase or decrease the value of the variable, // the value stored in the pointer will also change cout << "Get the value of var directly. "; cout << "This is " << var << endl; // Outputs the new value of variable cout << "Get the value of var using the pointer. "; cout << "This is " << *p << endl << endl; // Outputs the new value of the variable stored in the pointer p ++*p; // Increase the pointer cout << "Increase the pointer." << endl; // If we increase or decrease the pointer, // the value of the variable will also change cout << "Get the value of var directly. "; cout << "This is " << var << endl; // Outputs the new value of the variable cout << "Get the value of var using the pointer. "; cout << "This is " << *p << endl << endl; // Outputs the new value of the variable stored in the pointer p return 0; }

Pointers #1 [C++]