Compilare: user.cpp: In function ‘int main()’: user.cpp:23:7: warning: unused variable ‘i’ [-Wunused-variable] int n,i,nr; ^ user.cpp: In function ‘int print(int, int)’: user.cpp:19:21: warning: control reaches end of non-void function [-Wreturn-type] print(n-nr/2,nr/2);}} ^ user.cpp: In function ‘int main()’: user.cpp:21:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vecini.in","r",stdin); ^ user.cpp:22:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vecini.out","w",stdout); ^ user.cpp:24:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^