Compilare: user.cpp: In function ‘int main()’: user.cpp:145:59: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(C[i] == 0 && a.size() == b.size() && n - i == a.size()) ^ user.cpp:231:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(n - i == b.size()) B[i] = 1; ^ user.cpp:247:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(n - i == a.size()) A[i] = 1; ^ user.cpp:357:25: warning: statement has no effect [-Wunused-value] print(i); ^ user.cpp:358:28: warning: statement has no effect [-Wunused-value] print(A[i]); ^ user.cpp:359:28: warning: statement has no effect [-Wunused-value] print(B[i]); ^ user.cpp:360:34: warning: statement has no effect [-Wunused-value] print(has[i + 1]); ^ user.cpp:361:28: warning: statement has no effect [-Wunused-value] print(C[i]); ^