Compilare: user.c:5:6: warning: return type of ‘main’ is not ‘int’ [-Wmain] gigi main() { ^ user.c: In function ‘main’: user.c:13:9: warning: unused variable ‘nrcel’ [-Wunused-variable] int nrcel = 0; ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld\n", &t); ^ user.c:22:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld%lld",&n, &k); ^