Eroare de compilare: user.cpp:8:20: error: ‘short int y1’ redeclared as different kind of symbol short x1, x2 = 70, y1, y2 = 70; ^ 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:29:29: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] if (j > y1) y1 = j; ^ user.cpp:29:36: error: assignment of function ‘double y1(double)’ if (j > y1) y1 = j; ^ user.cpp:29:36: error: cannot convert ‘int’ to ‘double(double)throw ()’ in assignment user.cpp:31:37: warning: pointer to a function used in arithmetic [-Wpointer-arith] cout << (x1 - x2 + 1)*(y1 - y2 + 1);} ^ user.cpp:31:42: warning: pointer to a function used in arithmetic [-Wpointer-arith] cout << (x1 - x2 + 1)*(y1 - y2 + 1);} ^ user.cpp:31:43: error: invalid operands of types ‘int’ and ‘double (*)(double)throw ()’ to binary ‘operator*’ cout << (x1 - x2 + 1)*(y1 - y2 + 1);} ^