Error(s):

source_file.cpp(10): error C2059: syntax error: 'constant'
source_file.cpp(10): error C2238: unexpected token(s) preceding ';'
source_file.cpp(23): error C2059: syntax error: 'constant'
source_file.cpp(23): error C2059: syntax error: '<<'
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23506 for x64