Eroare de compilare: user.cpp:11:28: error: ‘long int time’ redeclared as different kind of symbol long rootChild,n,m,dfsRoot,time,u,v,cnt,newv[NMAX],viz[NMAX]; ^ In file included from /usr/include/pthread.h:26:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/gthr-default.h:35, from /usr/include/i386-linux-gnu/c++/4.8/bits/gthr.h:148, from /usr/include/c++/4.8/ext/atomicity.h:33, from /usr/include/c++/4.8/bits/basic_string.h:39, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:3: /usr/include/time.h:186:15: error: previous declaration of ‘time_t time(time_t*)’ extern time_t time (time_t *__timer) __THROW; ^ user.cpp: In function ‘void art_point(long int)’: user.cpp:16:9: error: ISO C++ forbids incrementing a pointer of type ‘time_t (*)(time_t*)throw () {aka long int (*)(long int*)throw ()}’ [-fpermissive] time++; ^ user.cpp:16:9: error: lvalue required as increment operand user.cpp:17:27: error: invalid conversion from ‘time_t (*)(time_t*)throw () {aka long int (*)(long int*)throw ()}’ to ‘__gnu_cxx::__alloc_traits<std::allocator<long int> >::value_type {aka long int}’ [-fpermissive] dfs_disc[u]=dfs_low[u]=time; ^ user.cpp:18:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<g[u].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:37:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biconex.in","r",stdin); ^ user.cpp:38:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biconex.out","w",stdout); ^ user.cpp:40:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld",&n,&m); ^ user.cpp:44:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld",&u,&v); ^