#include <windows.h>
#include <Psapi.h>

int main(){
    
 int pid = 3432; // PID of notepad.exe
 char buffer[MAX_PATH];
 HANDLE proc = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid);   
 GetModuleFileNameEx(proc, 0, buffer, MAX_PATH);
MessageBox(0,buffer,"",0);
}

MODULEENTRY32 me;
me.dwSize = sizeof(me);
HANDLE hp;
hp=CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,pid);
Module32First(hp,&me);
cout<<me.szExePath<<endl;