Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:17:19: error: ‘i’ was not declared in this scope for(int b=i+1;b<n-1;b++) ^ user.cpp:18:23: error: ‘j’ was not declared in this scope for(int c=j+1;c<n;c++) ^ user.cpp:10:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.in","r",stdin); ^ user.cpp:11:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.out","w",stdout); ^ user.cpp:13:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:14:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int a=1;a<=n;a++) scanf("%d",&v[a]); ^