Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:20:23: error: expected primary-expression before ‘)’ token while (i <= b_length)) ^ user.cpp:20:23: error: expected ‘;’ before ‘)’ token user.cpp:15:6: warning: unused variable ‘a_length’ [-Wunused-variable] int a_length = A.length(); ^ user.cpp:18:6: warning: unused variable ‘n_matches’ [-Wunused-variable] int n_matches = 0; ^ user.cpp:39:1: error: expected ‘}’ at end of input } ^