Compilare: user.cpp: In function ‘int main()’: user.cpp:14:24: warning: unused variable ‘h3’ [-Wunused-variable] long T, t, h1, h2, h3, h4, l ,st, i, n, j, k, flag, a1, a2; ^ user.cpp:14:28: warning: unused variable ‘h4’ [-Wunused-variable] long T, t, h1, h2, h3, h4, l ,st, i, n, j, k, flag, a1, a2; ^ user.cpp:14:45: warning: unused variable ‘j’ [-Wunused-variable] long T, t, h1, h2, h3, h4, l ,st, i, n, j, k, flag, a1, a2; ^ user.cpp:14:48: warning: unused variable ‘k’ [-Wunused-variable] long T, t, h1, h2, h3, h4, l ,st, i, n, j, k, flag, a1, a2; ^ user.cpp:14:51: warning: unused variable ‘flag’ [-Wunused-variable] long T, t, h1, h2, h3, h4, l ,st, i, n, j, k, flag, a1, a2; ^ user.cpp:14:61: warning: variable ‘a2’ set but not used [-Wunused-but-set-variable] long T, t, h1, h2, h3, h4, l ,st, i, n, j, k, flag, a1, a2; ^ /tmp/cc9tod8x.o: In function `main': user.cpp:(.text.startup+0x78): warning: the `gets' function is dangerous and should not be used.