Compilare: user.cpp: In function ‘int main()’: user.cpp:17:20: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 2 has type ‘long unsigned int*’ [-Wformat=] scanf("%ul",&le); ^ user.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=le;i++) ^ user.cpp:32:21: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’ [-Wformat=] printf("%u",temp); ^ user.cpp:15:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxsecv.in","r",stdin); ^ user.cpp:16:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxsecv.out","w",stdout); ^ user.cpp:17:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ul",&le); ^ user.cpp:20:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^