The program exited with code -1 (0xffffffff) how to fix it?

Question

C++ / C#

Working application. Doesn't give any errors. When compiled, nothing happens in the output of these lines
Thread 0x1fa4 exited with code -1 (0xffffffff).
Thread 0x1fa8 exited with code -1 (0xffffffff).
Thread 0x1fa0 exited with code -1 (0xffffffff).
The program "[8056] RobotsDB.exe" exited with code -1 (0xffffffff).

Answer 1

Run it under a debugger and see. There is nothing to do without a debugger in C++.