Pointers

Pointers

A pointer variable stores the address of another object.

Pointers

pointers.cpp 
#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}

#include <iostream>

int main() {
    int first = ;
    int second = ;
    int* current = &first;

    std::cout << "current=" << *current << std::endl;

    current = &second;

    std::cout << "current=" << *current << std::endl;
    std::cout << "first=" << first << std::endl;
    std::cout << "second=" << second << std::endl;
    return 0;
}
pointer variable A pointer type uses `*` in its declaration, such as `int*`.