View Compilation Error

0_0_10363628_24028.cpp:15: error: ISO C++ forbids initialization of member `b'
0_0_10363628_24028.cpp:15: error: making `b' static
0_0_10363628_24028.cpp:15: error: invalid in-class initialization of static data member of non-integral type `std::string'
0_0_10363628_24028.cpp: In member function `void Question_2100::Deal()':
0_0_10363628_24028.cpp:80: error: `b' undeclared (first use this function)
0_0_10363628_24028.cpp:80: error: (Each undeclared identifier is reported only once for each function it appears in.)