MessaggioErrors:

Errors: 100767369/source.cpp: In function ‘int main()’: 100767369/source.cpp:7:15: error: invalid operands of types ‘__gnu_cxx::__enable_if<true, double>::__type {aka double}’ and ‘__gnu_cxx::__enable_if<true, double>::__type {aka double}’ to binary ‘operator%’ cout<<(fabs(a)%fabs(b)+fabs(b))%fabs(b); ~~~~~~~^~~~~~~~ Note: cplusplus_gcc assumed, other valid options are cplusplus_clang, visual_cplusplus, you can be more specific next time. Tip: Mistake? Edit your message, I'll adjust my response.