Eroare de compilare: user.cpp: In function ‘node create(char)’: user.cpp:30:17: error: ‘nod’ was not declared in this scope arb[nod].state[i].opened=arb[nod].state[i].closed=0; ^ user.cpp:32:13: error: ‘nod’ was not declared in this scope arb[nod].state[0].opened=1; ^ user.cpp:36:13: error: ‘nod’ was not declared in this scope arb[nod].state[0].closed=1; ^ user.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:128:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(str+1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:128:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(str+1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:128:15: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(str+1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:124:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("luffpar.in","r",stdin); ^ user.cpp:125:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("luffpar.out","w",stdout); ^ user.cpp:127:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^