Compilare: user.c: In function ‘main’: user.c:39:19: warning: unused variable ‘i’ [-Wunused-variable] int n, k, hp, i, j, x; ^ user.c:43:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d", &n, &k, &hp); ^ user.c:48:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &x); ^