Compilare: main.c: In function 'qsort1': main.c:22:24: warning: passing argument 4 of 'qsort' makes pointer from integer without a cast [-Wint-conversion] qsort(v, k, begin, e); ^ In file included from main.c:2:0: /usr/include/stdlib.h:764:13: note: expected '__compar_fn_t {aka int (*)(const void *, const void *)}' but argument is of type 'int' extern void qsort (void *__base, size_t __nmemb, size_t __size, ^~~~~ main.c:24:24: warning: passing argument 4 of 'qsort' makes pointer from integer without a cast [-Wint-conversion] qsort(v, k, e + 1, end); ^~~ In file included from main.c:2:0: /usr/include/stdlib.h:764:13: note: expected '__compar_fn_t {aka int (*)(const void *, const void *)}' but argument is of type 'int' extern void qsort (void *__base, size_t __nmemb, size_t __size, ^~~~~ main.c: In function 'main': main.c:34:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf ( fin, "%d %d", &n, &k ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:36:6: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf ( fin, "%d", &v[i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~