Compilare: main.c: In function 'main': main.c:8:15: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'long long int *' [-Wformat=] fscanf(i, "%d", &p); ^ main.c:17:14: warning: too many arguments for format [-Wformat-extra-args] fprintf(o, "d", r); ^~~ main.c:8:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d", &p); ^~~~~~~~~~~~~~~~~~~