C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0x1b): undefined reference to `WorkerManager::WorkerManager()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0x2e): undefined reference to `WorkerManager::ShowMenu()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0x9d): undefined reference to `WorkerManager::exitSystem()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0xae): undefined reference to `WorkerManager::Add_Emp()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0xbf): undefined reference to `WorkerManager::Show_Emp()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0xd0): undefined reference to `WorkerManager::Del_Emp()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0xde): undefined reference to `WorkerManager::Mod_Emp()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0xec): undefined reference to `WorkerManager::Find_Emp()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0xfa): undefined reference to `WorkerManager::Sort_Emp()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0x108): undefined reference to `WorkerManager::Clear_File()'
C:\Users\pc\AppData\Local\Temp\ccs7hR8s.o:managerSystem.cpp:(.text+0x158): undefined reference to `WorkerManager::~WorkerManager()'
collect2.exe: error: ld returned 1 exit status