View Compilation Error

0_0_20561036_208.cpp: In function 'int main()':
0_0_20561036_208.cpp:19:22: error: invalid conversion from 'int' to 'std::ios_base::fmtflags {aka std::_Ios_Fmtflags}' [-fpermissive]
   cout<<setiosflags(2)<<sum<<endl;
                      ^
In file included from 0_0_20561036_208.cpp:2:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iomanip:96:3: note: initializing argument 1 of 'std::_Setiosflags std::setiosflags(std::ios_base::fmtflags)'
   setiosflags(ios_base::fmtflags __mask)
   ^