Compilare: user.cpp: In function ‘bool verifica(int)’: user.cpp:13:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (l = poz; l < s.size(); l++){ ^ user.cpp: In function ‘int main()’: user.cpp:60:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = i; j < s.size(); j++){ ^ user.cpp:23:34: warning: unused variable ‘k’ [-Wunused-variable] int t, i, ax, bx, nr, np, j, k, p, kx, ky,f, semn, side, a, b; ^ user.cpp:23:40: warning: unused variable ‘kx’ [-Wunused-variable] int t, i, ax, bx, nr, np, j, k, p, kx, ky,f, semn, side, a, b; ^ user.cpp:23:44: warning: unused variable ‘ky’ [-Wunused-variable] int t, i, ax, bx, nr, np, j, k, p, kx, ky,f, semn, side, a, b; ^ user.cpp:23:50: warning: variable ‘semn’ set but not used [-Wunused-but-set-variable] int t, i, ax, bx, nr, np, j, k, p, kx, ky,f, semn, side, a, b; ^ user.cpp:23:56: warning: variable ‘side’ set but not used [-Wunused-but-set-variable] int t, i, ax, bx, nr, np, j, k, p, kx, ky,f, semn, side, a, b; ^