Compilare: main.c: In function 'main': main.c:26:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long unsigned int' [-Wformat=] printf("%d %d \n", p, n); ^ main.c:26:15: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long unsigned int' [-Wformat=] printf("%d %d \n", p, n); ^ main.c:20:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lu", &n); ^~~~~~~~~~~~~~~~~~~~