Eroare de compilare: user.cpp:10:17: error: ‘int j1’ redeclared as different kind of symbol int n,i,sol,k,j,j1; ^ In file included from /usr/include/features.h:367:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/os_defines.h:39, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/c++config.h:482, from /usr/include/c++/5/iosfwd:38, from /usr/include/c++/5/ios:38, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/bits/mathcalls.h:248:1: note: previous declaration ‘double j1(double)’ __MATHCALL (j1,, (_Mdouble_)); ^