Compilare: user.cpp: In function ‘void cautaPereche(int, int)’: user.cpp:92:23: warning: variable ‘circuit2’ set but not used [-Wunused-but-set-variable] int circuit1 = 0, circuit2 = 0; ^ user.cpp: In function ‘int main()’: user.cpp:184:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mz.in", "r", stdin); ^ user.cpp:185:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mz.out", "w", stdout); ^ user.cpp:190:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^ user.cpp:193:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", placa[i] + 1); ^