Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12:12: error: ‘ciur’ was not declared in this scope if(ciur[i]==1) continue; ^ user.cpp:13:33: error: ‘ciur’ was not declared in this scope for(int j=i*i;j<=n;j++) ciur[j]=1; ^ user.cpp:16:31: error: ‘ciur’ was not declared in this scope for(int i=2;i<=n;i++) if(!ciur[i]) ++ct; ^ user.cpp:6:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ciur.in","r",stdin); ^ user.cpp:7:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ciur.out","w",stdout); ^ user.cpp:8:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^