Compilare: user.cpp: In function ‘int main()’: user.cpp:19:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &n, &k); ^ user.cpp:21:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &v[i]); ^ user.cpp:37:35: warning: ‘poz_sf’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fo, "%d %d %d", poz_sf-k+2, poz_sf+1, bmax); ^