CPP - Data Structures

#include <iostream>
#include <cstdlib>

struct data{
    std::string name;
    std::string city;
    data *prevPtr;
};
int main(int argc, char *argv[]){
    system("color 2f");

    data zero;
    zero.name = "Lady Gaga";
    zero.city = "NYC";
    zero.prevPtr = NULL;

    data satu;
    satu.name = "Luna Maya";
    satu.city = "Denpasar";
    satu.prevPtr = &zero;

    data dua;
    dua.name = "Bill Clinton";
    dua.city = "Virginia";
    dua.prevPtr = &satu;

    data tiga;
    tiga.name = "Barack Obama";
    tiga.city = "White House";
    tiga.prevPtr = &dua;

    std::cout << satu.prevPtr->name << std::endl; // lady gaga
    std::cout << dua.prevPtr->name << std::endl;  // luna maya
    std::cout << tiga.prevPtr->name << std::endl;    // barack obama

    return 0;
}

CPP - Data Structures