Compilare: user.cpp: In function ‘void solveAB()’: user.cpp:58:24: warning: unused variable ‘x’ [-Wunused-variable] int sol=0, arie=0, x; ^ user.cpp: In function ‘void solveC()’: user.cpp:107:21: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] g << x<< ' ' << y << ' ' << sol << '\n'; ^ user.cpp:107:10: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] g << x<< ' ' << y << ' ' << sol << '\n'; ^