how can i detect an error?

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Building to ensure sources are up-to-date
Selecting target:
Release
Adding source dir: C:\Users\Cambalinho\Documents\CodeBlocks\classcont rols\
Adding source dir: C:\Users\Cambalinho\Documents\CodeBlocks\classcont rols\
Adding file: C:\Users\Cambalinho\Documents\CodeBlocks\classcont rols\bin\Release\classcontrols.exe
Changing directory to: C:/Users/Cambalinho/Documents/CodeBlocks/classcontrols/bin/Release
Set variable: PATH=.;C:\Program Files (x86)\CodeBlocks\mingw32\i686-w64-mingw32\lib;C:\Program Files (x86)\CodeBlocks\mingw32\bin;C:\Program Files (x86)\CodeBlocks\mingw32;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\System32;C:\Windows;C:\Windows\Sys tem32\wbem;C:\Program Files (x86)\PC Connectivity Solution;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\ProgramData\Oracle\Jav a\javapath;C:\Windows\System32\WindowsPowerShell\v 1.0;C:\Program Files\Broadcom\Broadcom 802.11\Driver;C:\Program Files (x86)\Skype\Phone;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\Microsoft Visual Studio\Common\Tools\WinNT;C:\Program Files (x86)\Microsoft Visual Studio\Common\MSDev98\Bin;C:\Program Files (x86)\Microsoft Visual Studio\Common\Tools;C:\Program Files (x86)\Microsoft Visual Studio\VC98\Bin;C:\Program Files (x86)\Dr. Memory\bin
Starting debugger: C:\Program Files (x86)\CodeBlocks\mingw32\bin\gdb.exe -nx -fullname -quiet -args C:/Users/Cambalinho/Documents/CodeBlocks/classcontrols/bin/Release/classcontrols.exe
done
Registered new type: wxString
Registered new type: STL String
Registered new type: STL Vector
Setting breakpoints
Debugger name and version: GNU gdb (GDB) 7.6
Child process PID: 4056
In ntdll!ZwClose () (C:\Windows\system32\ntdll.dll)
Continuing...
In ntdll!ZwClose () (C:\Windows\system32\ntdll.dll)
Continuing...
[Inferior 1 (process 4056) exited with code 030000000010]
Debugger finished with status 0

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