Compilare: user.cpp: In function 'int cauta(double, double)': user.cpp:25: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:37: warning: unused variable 'i' user.cpp:37: warning: unused variable 'j' user.cpp:38: warning: unused variable 'x' user.cpp:38: warning: unused variable 'y' user.cpp:38: warning: unused variable 'x1' user.cpp:38: warning: unused variable 'y1' user.cpp:38: warning: unused variable 'x2' user.cpp:38: warning: unused variable 'y2'