Compilare: user.cpp: In function ‘int main()’: user.cpp:8:12: warning: unused variable ‘in’ [-Wunused-variable] int n, k, in, s, max, a, i; ^ user.cpp:11:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &n, &k); ^ user.cpp:15:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &a); ^