Eroare de compilare: user.cpp:5:15: error: ‘long long int div’ redeclared as different kind of symbol long long n,i,div,nr; ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:785:14: error: previous declaration of ‘div_t div(int, int)’ extern div_t div (int __numer, int __denom) ^ user.cpp: In function ‘int main()’: user.cpp:10:18: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%d",&n); ^ user.cpp:14:16: error: overloaded function with no contextual type information div=i*2; ^ user.cpp:15:16: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘long long int’ to binary ‘operator<=’ while(div<=n){ ^ user.cpp:16:18: error: invalid types ‘bool [2000010][<unresolved overloaded function type>]’ for array subscript v[div]=false; ^ user.cpp:17:8: error: overloaded function with no contextual type information div+=i;}} ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciur.in","r",stdin); ^ user.cpp:10:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^