Compilare: user.cpp: In function ‘void Dfs(int, int)’: user.cpp:37:9: warning: unused variable ‘len’ [-Wunused-variable] int len=0,nodales=-1,cacat,p; ^ user.cpp: In function ‘int main()’: user.cpp:79:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("razboi.in","r",stdin); ^ user.cpp:80:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("razboi.out","w",stdout); ^ user.cpp:81:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.cpp:84:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:92:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x,&y,&d); ^ user.cpp: In function ‘void Dfs(int, int)’: user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(tata && tata!=nodales) ^ user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:50:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized]