Eroare de compilare: user.cpp:15:9: error: ‘int y1’ redeclared as different kind of symbol int x1, y1, x2, y2; ^ 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/iosfwd:38, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream: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:46:20: error: assignment of function ‘double y1(double)’ y1 = j + 1; ^ user.cpp:46:20: error: cannot convert ‘int’ to ‘double(double)throw ()’ in assignment user.cpp:56:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ci < c[1].size()) { ^ user.cpp:74:13: error: invalid types ‘int [1005][double(double)throw ()]’ for array subscript v[x1][y1] = a[x1][y1]; ^ user.cpp:74:25: error: invalid types ‘int [1005][double(double)throw ()]’ for array subscript v[x1][y1] = a[x1][y1]; ^ user.cpp:76:22: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘std::vector<int>::value_type {aka int}’ [-fpermissive] c[2].push_back(y1); ^ In file included from /usr/include/c++/4.8/vector:64:0, from /usr/include/c++/4.8/bits/random.h:34, from /usr/include/c++/4.8/random:50, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:2: /usr/include/c++/4.8/bits/stl_vector.h:919:7: error: initializing argument 1 of ‘void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::value_type = int]’ [-fpermissive] push_back(value_type&& __x) ^ user.cpp:78:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ci < c[1].size()) { ^