Compilare: user.cpp: In function ‘int main()’: user.cpp:43:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &a, &b, &c, &k); ^ user.cpp: In function ‘int query(int, int, int, int, int, int)’: user.cpp:25:26: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] rez = rez + p10[comp]; ^