Compilare: user.cpp: In function ‘void create_dyn(int)’: user.cpp:103:9: warning: variable ‘as’ set but not used [-Wunused-but-set-variable] int as=0; ^ user.cpp: In function ‘int main()’: user.cpp:116:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("symmetricgraph2.in","r",stdin); ^ user.cpp:117:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("symmetricgraph2.out","w",stdout); ^ user.cpp: In function ‘void citire()’: user.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:17:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&z); ^