Eroare de compilare: main.cpp:3:11: error: 'double y0' redeclared as different kind of symbol double x0,y0,d,f,co,si,v1,v2; ^~ In file included from /usr/include/features.h:367:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/os_defines.h:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/c++config.h:507, from /usr/include/c++/6/cassert:43, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:33, from main.cpp:1: /usr/include/x86_64-linux-gnu/bits/mathcalls.h:250:1: note: previous declaration 'double y0(double)' __MATHCALL (y0,, (_Mdouble_)); ^ main.cpp: In function 'int main()': main.cpp:12:17: error: assignment of function 'double y0(double)' x0=0,y0=0; d=0; f=0; co=0,si=0; v1=0,v2=0; ^ main.cpp:12:17: error: cannot convert 'int' to 'double(double) throw ()' in assignment main.cpp:15:24: error: assignment of function 'double y0(double)' if(b!=0) y0=1./b; ^ main.cpp:15:24: error: cannot convert 'double' to 'double(double) throw ()' in assignment main.cpp:22:20: error: invalid operands of types 'double(double) throw ()' and 'double(double) throw ()' to binary 'operator*' f=(x0*x0+y0*y0); ~~^~~ main.cpp:25:17: error: invalid operands of types 'double(double) throw ()' and 'double' to binary 'operator/' si=((y0)/f); ~~~~^~ Non zero exit status: 1