Compilare: user.cpp: In function ‘int main()’: user.cpp:15:22: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[50005]’ [-Wformat=] scanf("%s",&s); ^ user.cpp:21:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sir.size()<lenght) ~~~~~~~~~~^~~~~~~ user.cpp:35:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=lenght;j<sir.size();j++) ~^~~~~~~~~~~ user.cpp:10:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsecvente2.in","r",stdin); ^ user.cpp:11:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsecvente2.out","w",stdout); ^ user.cpp:12:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:15:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&s); ^