windows系统调用 获取当前内存信息

 #include "iostream"
 #include "windows.h"
 #include "shlwapi.h"
 #include  "iomanip"
 #pragma comment(lib,"shlwapi.lib")
 using namespace std;

 void main(){
     SYSTEM_INFO si;
     ZeroMemory(&si,sizeof(si));
     GetSystemInfo(&si);

     TCHAR szPageSize[MAX_PATH];
     StrFormatByteSize(si.dwPageSize,szPageSize,MAX_PATH);

     DWORD dwMemSize=(DWORD)si.lpMaximumApplicationAddress-(DWORD)si.lpMinimumApplicationAddress;
     TCHAR szMemSize[MAX_PATH];
     StrFormatByteSize(dwMemSize,szMemSize,MAX_PATH);

     cout<<"Virtual memory page size:"<<szPageSize<<endl;
     cout.fill('');
     cout<<"Minimum application address:0x"
         <<hex
         <<setw()
         <<(DWORD)si.lpMinimumApplicationAddress
         <<endl;
     cout<<"Maximum application address:0x"
         <<hex<<setw()
         <<(DWORD)si.lpMaximumApplicationAddress
         <<endl;

     cout<<"Total available virtual memory:"
         <<szMemSize<<endl;

     getchar();
 }