Eroare de compilare: user.cpp:8:39: error: ‘double y1’ redeclared as different kind of symbol double numberOfTests, A, B, x, y, x1, y1; ^ In file included from /usr/include/features.h:357:0, from /usr/include/assert.h:37, from /usr/include/c++/4.8/cassert:43, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:33, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:243:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:20:12: error: assignment of function ‘double y1(double)’ y1 = (-A * x + 1) / B; ^ user.cpp:20:12: error: cannot convert ‘double’ to ‘double(double)throw ()’ in assignment user.cpp:22:74: error: invalid operands of types ‘double(double)throw ()’ and ‘double’ to binary ‘operator-’ fout << setprecision(8) << fixed << min (fabs(x1 - x), fabs(y1 - y)) << '\n'; ^