Eroare de compilare: user.cpp:18:5: error: ‘int stime’ redeclared as different kind of symbol int stime = 0; ^ 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/ios_base.h:39, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/time.h:298:12: error: previous declaration of ‘int stime(const time_t*)’ extern int stime (__const time_t *__when) __THROW; ^ user.cpp: In function ‘void tarjan(int)’: user.cpp:38:32: error: ISO C++ forbids incrementing a pointer of type ‘int (*)(const time_t*)throw () {aka int (*)(const long int*)throw ()}’ [-fpermissive] index[nod] = lowlink[nod] = ++stime; ^ user.cpp:38:32: error: lvalue required as increment operand user.cpp: In function ‘int main()’: user.cpp:65:27: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(OUT, "w", stdout); ^ user.cpp: In function ‘void readData()’: user.cpp:28:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %d%d", &N, &M); ^ user.cpp:31:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %d%d", &s, &d); ^