Eroare de compilare: user.cpp:9:39: error: ‘int y1’ redeclared as different kind of symbol int n, nr, i, j, i2, a, b, c, x1, x2, y1, y2, px, py, k, mx, mx2, f[410][410], p[410][410]; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iostream:38, 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:35:13: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ fin >> x1 >> y1 >> x2 >> y2 >> c; ^ In file included from /usr/include/c++/4.8/iostream:40:0, from user.cpp:1: /usr/include/c++/4.8/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = double(double)throw ()]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:38:33: warning: pointer to a function used in arithmetic [-Wpointer-arith] if (y1 < 0) y1 = b-(b/2+y1); ^ user.cpp:38:35: error: invalid operands of types ‘int’ and ‘double (*)(double)throw ()’ to binary ‘operator-’ if (y1 < 0) y1 = b-(b/2+y1); ^ user.cpp:39:23: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator-’ else y1 = b/2-y1; ^ user.cpp:47:18: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] if (y1 < y2) px = 1; ^ user.cpp:50:11: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] i = y1; ^ user.cpp:59:22: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] if (y2 > y1) i++; ^