Eroare de compilare: main.cpp:16:8: error: 'double y1' redeclared as different kind of symbol double y1 = - 10005, x1 = 10005, y2 = 10005, x2 = - 10005; ^~ 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/iostream:38, from main.cpp:1: /usr/include/x86_64-linux-gnu/bits/mathcalls.h:251:1: note: previous declaration 'double y1(double)' __MATHCALL (y1,, (_Mdouble_)); ^ main.cpp: In function 'int main()': main.cpp:37:19: error: invalid operands of types 'double(double) throw ()' and 'double' to binary 'operator<' if(y1 < rotated_y) y1 = rotated_y; ~~~^~~~~~~~~~~ main.cpp:37:37: error: assignment of function 'double y1(double)' if(y1 < rotated_y) y1 = rotated_y; ^~~~~~~~~ main.cpp:37:37: error: cannot convert 'double' to 'double(double) throw ()' in assignment main.cpp:43:60: error: invalid operands of types 'double(double) throw ()' and 'double' to binary 'operator-' out << fixed << setprecision(3) << (x2 - x1) * (y1 - y2) << '\n'; ~~~^~~~ Non zero exit status: 1