Compilare: user.cpp: In function ‘int main()’: user.cpp:57:28: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::bitset<50u>’ [-Wformat=] printf("%d", answer); ^ user.cpp:28:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("echilibru.in", "r", stdin); ^ user.cpp:29:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("echilibru.out", "w", stdout); ^ user.cpp:30:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %d ", &teste); ^ user.cpp:33:21: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(parser); ^ /tmp/ccyRCjJY.o: In function `main': user.cpp:(.text.startup+0x81): warning: the `gets' function is dangerous and should not be used.