Compilare: user.cpp: In function ‘int main()’: user.cpp:14:21: warning: unused variable ‘aux’ [-Wunused-variable] int lmax, i, j, aux, start, fin, front, back, len, p, n, m; ^ user.cpp:14:33: warning: unused variable ‘fin’ [-Wunused-variable] int lmax, i, j, aux, start, fin, front, back, len, p, n, m; ^ user.cpp:14:45: warning: unused variable ‘back’ [-Wunused-variable] int lmax, i, j, aux, start, fin, front, back, len, p, n, m; ^ user.cpp:12:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("potriveala.in", "r", stdin); ^ user.cpp:13:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("potriveala.out", "w", stdout); ^ user.cpp:16:16: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(a + 1); ^ user.cpp:19:16: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(b + 1); ^ /tmp/cczUZWbR.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.