Compiling TodoList.cpp Error listing 01

Compiling: TodoList.cpp
In file included from /home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:1:
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.h:6: error: expected initializer before ‘<’ token
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.h:12: error: ‘TaskList’ does not name a type
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp: In member function ‘void TodoList::addTask(Task)’:
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:6: error: ‘m_todoList’ was not declared in this scope
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp: In member function ‘void TodoList::delTask(int)’:
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:12: error: ‘TaskList’ has not been declared
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:12: error: expected ‘;’ before ‘elem’
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:13: error: ‘elem’ was not declared in this scope
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:13: error: ‘m_todoList’ was not declared in this scope
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp: In member function ‘void TodoList::dispList()’:
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:27: error: ‘TaskList’ has not been declared
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:27: error: expected ‘;’ before ‘elem’
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:31: error: ‘elem’ was not declared in this scope
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:31: error: ‘m_todoList’ was not declared in this scope
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp: In member function ‘void TodoList::test()’:
/home/arulmozhi/Desktop/April/CB/todo_char_string/TodoList.cpp:44: warning: deprecated conversion from string constant to ‘char*’