Eroare de compilare: user.cpp:9:23: error: ‘int y0’ redeclared as different kind of symbol int n,k,nr,nl,nc,x0=1,y0=1; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/iosfwd:38, from /usr/local/include/c++/4.8.0/ios:38, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/include/bits/mathcalls.h:241:1: error: previous declaration of ‘double y0(double)’ __MATHCALL (y0,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:60:43: error: ISO C++ forbids decrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] if (v[r].b==0 || v[r].d==0) --y0; ^ user.cpp:60:43: error: lvalue required as decrement operand user.cpp:76:21: warning: pointer to a function used in arithmetic [-Wpointer-arith] a[i+y0][j+x0]=1; ^ user.cpp:76:23: error: invalid types ‘std::bitset<210u> [210][double (*)(double)throw ()]’ for array subscript a[i+y0][j+x0]=1; ^ user.cpp:77:17: warning: pointer to a function used in arithmetic [-Wpointer-arith] nl=y0+(2*n-1); ^ user.cpp:77:17: warning: pointer to a function used in arithmetic [-Wpointer-arith] user.cpp:77:10: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] nl=y0+(2*n-1); ^