chmkar

@ OwsapCan you help me solve this error

compiling ShipDefense.cpp
In file included from ShipDefense.cpp:18:
ShipDefense.h:188:7: error: 'time_t' in namespace 'std' does not name a type
  std::time_t GetStartTime() const { return m_lStartTime; }
       ^~~~~~
ShipDefense.h:188:2: note: suggested alternative: 'time_put'
  std::time_t GetStartTime() const { return m_lStartTime; }
  ^~~
  time_put
ShipDefense.h:218:7: error: 'time_t' in namespace 'std' does not name a type
  std::time_t m_lStartTime;
       ^~~~~~
ShipDefense.h:218:2: note: suggested alternative: 'time_put'
  std::time_t m_lStartTime;
  ^~~
  time_put
ShipDefense.cpp: In constructor 'CShipDefense::CShipDefense(long int, DWORD)':
ShipDefense.cpp:480:2: error: 'm_lStartTime' was not declared in this scope
  m_lStartTime = 0;
  ^~~~~~~~~~~~
ShipDefense.cpp:480:2: note: suggested alternative: 'm_byState'
  m_lStartTime = 0;
  ^~~~~~~~~~~~
  m_byState
ShipDefense.cpp: In member function 'virtual void CShipDefense::Destroy()':
ShipDefense.cpp:505:2: error: 'm_lStartTime' was not declared in this scope
  m_lStartTime = 0;
  ^~~~~~~~~~~~
ShipDefense.cpp:505:2: note: suggested alternative: 'm_byState'
  m_lStartTime = 0;
  ^~~~~~~~~~~~
  m_byState
ShipDefense.cpp: In member function 'void CShipDefense::Notice(LPCHARACTER, bool, const char*, ...)':
ShipDefense.cpp:602:7: warning: unused variable 'iLen' [-Wunused-variable]
   int iLen = vsnprintf(szBuf, sizeof(szBuf), c_pszLocaleText, pszArgs);
       ^~~~
ShipDefense.cpp: In member function 'void CShipDefense::Start()':
ShipDefense.cpp:1023:2: error: 'm_lStartTime' was not declared in this scope
  m_lStartTime = std::time(nullptr);
  ^~~~~~~~~~~~
ShipDefense.cpp:1023:2: note: suggested alternative: 'm_byState'
  m_lStartTime = std::time(nullptr);
  ^~~~~~~~~~~~
  m_byState
ShipDefense.cpp: In member function 'bool CShipDefense::PrepareDeck()':
ShipDefense.cpp:1059:3: error: 'm_lStartTime' was not declared in this scope
   m_lStartTime = std::time(nullptr);
   ^~~~~~~~~~~~
ShipDefense.cpp:1059:3: note: suggested alternative: 'm_byState'
   m_lStartTime = std::time(nullptr);
   ^~~~~~~~~~~~
   m_byState
ShipDefense.cpp: In member function 'void CShipDefense::JumpAll(ShipDefense::EJumpTo)':
ShipDefense.cpp:1301:9: warning: enumeration value 'JUMP_MAX' not handled in switch [-Wswitch]
  switch (eJumpTo)