Compilare: user.c: In function ‘read’: user.c:18:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^ user.c:22:35: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for(i = 0; i < n; i++) fscanf(fin, "%d", &vec[ i ]); ^ user.c: In function ‘nth_element’: user.c:62:1: warning: control reaches end of non-void function [-Wreturn-type] }; ^