Compilare: user.c: In function ‘main’: user.c:19:9: warning: format ‘%u’ expects argument of type ‘unsigned int *’, but argument 4 has type ‘long long unsigned int *’ [-Wformat=] fscanf(f, "%d%u", &N, &R); ^ user.c:8:6: warning: unused variable ‘i’ [-Wunused-variable] int i, j; ^ user.c:15:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &T); ^ user.c:19:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%u", &N, &R); ^