Compilare: user.cpp: In function ‘int main()’: user.cpp:11:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n+1;i++) ^ user.cpp:14:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(lg=1;lg<n;lg++) ^ user.cpp:15:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n-lg;i++) ^ user.cpp:10:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&n); ^ user.cpp:12:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&v[i]); ^