Process Memory Scanner (Windows)

#include <windows.h>

#include <cstdlib>
#include <iostream>
#include <string>

int main() {
    std::cout << "begin scan..." << std::endl;

    MEMORY_BASIC_INFORMATION info;
    void* curAddrPointer;
    unsigned long curAddr = 0ul;
    unsigned long prevAddr = curAddr;
    unsigned no = 0;

    while (true) {
        no++;
        curAddrPointer = reinterpret_cast<void*>(curAddr);
        if (0 == VirtualQuery(curAddrPointer, &info, sizeof(info))) {
            std::cout << "VirtualQuery is FAIL." << std::endl;
            break;
        }
        prevAddr = curAddr;
        curAddr += info.RegionSize;
        if (curAddr <= prevAddr) break;

        std::cout.width(3);
        std::cout.setf(std::ios_base::right, std::ios_base::adjustfield);
        std::cout << no;
        std::cout << ") [" << curAddrPointer << "] ";
        std::cout.width(5);
        std::cout.setf(std::ios_base::right, std::ios_base::adjustfield);
        std::cout << prevAddr / 1024 / 1024 << ": ";
        std::cout.width(5);
        std::cout.setf(std::ios_base::right, std::ios_base::adjustfield);
        std::cout << info.RegionSize / 1024 / 1024 << " MB ";
        switch (info.State) {
            case MEM_COMMIT:  std::cout << "commit";  break;
            case MEM_FREE:    std::cout << "free";    break;
            case MEM_RESERVE: std::cout << "reserve"; break;
            default: std::cout << "?";
        }
        std::cout << std::endl;
    }

    std::cout << "DONE; press enter to exit..." << std::endl;
    std::string done;
    std::getline(std::cin, done);
    return EXIT_SUCCESS;
}

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