Eroare de compilare: user.cpp:8:9: error: ‘int y1’ redeclared as different kind of symbol int x1, y1, x2, y2; ^~ 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 ‘void Get_Number_Of_Lakes()’: user.cpp:48:27: error: assignment of function ‘double y1(double)’ y1 = y2 = j; ^ user.cpp:48:27: error: cannot convert ‘int’ to ‘double(double) throw ()’ in assignment user.cpp:52:35: error: invalid operands of types ‘int’ and ‘double(double) throw ()’ to binary ‘operator-’ if( x2 - x1 == y2 - y1) ~~~^~~~ user.cpp: In function ‘void Read()’: user.cpp:14:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &n ); ^ user.cpp:18:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &m[i][j] ); ^