From g++ to Visual C++.

["Doesnt Stop" <DoesntStop mail com>]

I have recently migrated from g++ to Visual C++.
 
I have this code that compiled without any errors or warnings under g++, but now in VC++ using VS10 as my IDE, I get an error that reads
 
 Unhandled exception at 0x70f333bc (msvcp100.dll) in myProgram.exe: 0xC0000005: Access violation reading location 0x00000004.
 
 
 
    std::string s;
 
     int i = 100;
 
     ...
 
     std::stringstream num; <<== 0xC0000005: Access violation reading location 0x00000004.
 
     num.flush();
 
     num << i;
 
     s.clear();
 
     s = num.str();
 
 
 
The program compiles, links and executes, but once it exits, it throws this run-time error.
 
 
 
How can I solve this runtime error? and what is the cause of this run-time error?