Compilare: user.cpp: In function ‘int main()’: user.cpp:26:19: warning: variable ‘st’ set but not used [-Wunused-but-set-variable] int dist, st; ^ user.cpp:29:13: warning: variable ‘pos’ set but not used [-Wunused-but-set-variable] int pos; ^ user.cpp:16:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:19:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^