Compilare: user.c: In function ‘main’: user.c:40:6: warning: pointer targets in passing argument 1 of ‘nth_element’ differ in signedness [-Wpointer-sign] fprintf(fout, "%d", nth_element(vec, n, k)); ^ user.c:18:5: note: expected ‘int *’ but argument is of type ‘uint *’ int nth_element(int vec[],int,int); ^ user.c:30:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^ user.c:34:35: 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 ]); ^