Compilare: user.cpp: In function ‘int main()’: user.cpp:11:23: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long unsigned int*’ [-Wformat=] fscanf(fin,"%d",&n); ^ user.cpp:14:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<n; i++) ^ user.cpp:27:24: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long unsigned int’ [-Wformat=] fprintf(fout,"%d",k); ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:15:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[i]); ^