Compilare: user.cpp: In function ‘int main()’: user.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (strlen(S[i]) > mx) { ^ user.cpp:28:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (strlen(S[i]) == mx && strcmp(S[i], S[jj]) < 0) { jj = i; } ^ user.cpp:41:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (strlen(S[i]) > mx) mx = strlen(S[i]); ^ user.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (strlen(S[i]) == mx) { ^ user.cpp: In function ‘bool caut_a_in_b(char*, char*, int, int)’: user.cpp:73:15: warning: unused variable ‘cond’ [-Wunused-variable] int i, j, y, cond=0; ^