View Compilation Error

0_0_33883825_28811.cpp: In function 'int main()':
0_0_33883825_28811.cpp:14:51: error: invalid user-defined conversion from 'std::basic_ostream<char>::__ostream_type {aka std::basic_ostream<char>}' to 'int' [-fpermissive]
   else a%b ? printf("%.2lf\n",a*1.0/b) : cout<<a/b<<endl; 
                                                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:44:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_33883825_28811.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_ios.h:115:7: note: candidate is: std::basic_ios<_CharT, _Traits>::operator void*() const [with _CharT = char; _Traits = std::char_traits<char>] <near match>
       operator void*() const
       ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_ios.h:115:7: note:   no known conversion from 'void*' to 'int'