Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:30:27: error: invalid conversion from ‘int (*)(const char*, const char*)throw ()’ to ‘__compar_fn_t {aka int (*)(const void*, const void*)}’ [-fpermissive] qsort(v, n, LUNG, strcmp); ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:47, from user.cpp:1: /usr/include/stdlib.h:761:13: error: initializing argument 4 of ‘void qsort(void*, size_t, size_t, __compar_fn_t)’ [-fpermissive] extern void qsort (void *__base, size_t __nmemb, size_t __size, ^ user.cpp:19:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &p, &n); ^