Compilare: user.cpp: In function ‘unsigned int nrper(int)’: user.cpp:15:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned int i = 1;i <= n;i ++) ^ user.cpp: In function ‘int main()’: user.cpp:31:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %u",&n,&k); ^ user.cpp:33:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i]); ^