Eroare de compilare: user.cpp:6:35: error: ‘int y1’ redeclared as different kind of symbol int n,u,p,i,j,ex,mij,nr,b,m,x1,x2,y1,y2,x,y; ^ 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:25:15: error: assignment of function ‘double y1(double)’ y1=j+1; ^ user.cpp:25:15: error: cannot convert ‘int’ to ‘double(double)throw ()’ in assignment user.cpp:28:43: error: invalid types ‘char [102][double(double)throw ()]’ for array subscript if(a[x1][j]==a[x2][j]&&a[i][y1]==a[i][y2]) ^ user.cpp:38:30: error: invalid types ‘char [102][double(double)throw ()]’ for array subscript while(a[i][y1]==a[i][y2]) ^ user.cpp:40:23: error: ISO C++ forbids incrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] y1++; ^ user.cpp:40:23: error: lvalue required as increment operand user.cpp:45:22: warning: pointer to a function used in arithmetic [-Wpointer-arith] y=y1-j-1; ^ user.cpp:45:24: warning: pointer to a function used in arithmetic [-Wpointer-arith] y=y1-j-1; ^ user.cpp:45:23: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] y=y1-j-1; ^