Eroare de compilare: user.cpp:10:15: error: ‘int y1’ redeclared as different kind of symbol int n, m, x1, y1, x2, y2, q; ^~ In file included from /usr/include/features.h:367:0, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/os_defines.h:39, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/c++config.h:507, from /usr/include/c++/6/cassert:43, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:33, from user.cpp:1: /usr/include/bits/mathcalls.h:251:1: note: previous declaration ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int solve()’: user.cpp:52:36: error: invalid operands of types ‘int’ and ‘double(double) throw ()’ to binary ‘operator-’ int st = 0, dr = min(x2 - x1, y2 - y1) + 1, sol; ~~~^~~~ user.cpp:55:34: warning: pointer to a function used in arithmetic [-Wpointer-arith] if (verif(x1 + mij - 1, y1 + mij - 1, x2, y2, mij)) { ^~~ user.cpp:55:40: warning: pointer to a function used in arithmetic [-Wpointer-arith] if (verif(x1 + mij - 1, y1 + mij - 1, x2, y2, mij)) { ^ user.cpp:55:38: error: invalid conversion from ‘double (*)(double) throw ()’ to ‘int’ [-fpermissive] if (verif(x1 + mij - 1, y1 + mij - 1, x2, y2, mij)) { ~~~~~~~~~^~~ user.cpp:43:6: note: initializing argument 2 of ‘bool verif(int, int, int, int, int)’ bool verif (int x1, int y1, int x2, int y2, int l) { ^~~~~ user.cpp:56:7: error: ‘sol’ was not declared in this scope sol = mij; ^~~ user.cpp:62:11: error: ‘sol’ was not declared in this scope fout << sol << "\n"; ^~~ user.cpp:63:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:70:15: error: no match for ‘operator>>’ (operand types are ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ and ‘double(double) throw ()’) fin >> x1 >> y1 >> x2 >> y2; ~~~~~~~~~~^~~~~ In file included from /usr/include/c++/6/sstream:38:0, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/6/istream:120:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match> operator>>(__istream_type& (*__pf)(__istream_type&)) ^~~~~~~~ /usr/include/c++/6/istream:120:7: note: conversion of argument 1 would be ill-formed: