Compilare: user.cpp: In function ‘int main()’: user.cpp:15:9: warning: unused variable ‘a’ [-Wunused-variable] int T, a, b, c, x, y, z; ^ user.cpp:15:12: warning: unused variable ‘b’ [-Wunused-variable] int T, a, b, c, x, y, z; ^ user.cpp:15:15: warning: unused variable ‘c’ [-Wunused-variable] int T, a, b, c, x, y, z; ^ user.cpp:15:18: warning: unused variable ‘x’ [-Wunused-variable] int T, a, b, c, x, y, z; ^ user.cpp:15:21: warning: unused variable ‘y’ [-Wunused-variable] int T, a, b, c, x, y, z; ^ user.cpp:15:24: warning: unused variable ‘z’ [-Wunused-variable] int T, a, b, c, x, y, z; ^