Compilare: user.c: In function ‘main’: user.c:47:25: warning: unused variable ‘i’ [-Wunused-variable] long long n, k, hp, i, j, x; ^ user.c:51:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%lld%lld%lld", &n, &k, &hp); ^ user.c:56:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%lld", &x); ^