Compilare: main.c: In function 'main': main.c:21:26: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'int' [-Wformat=] fprintf(out, "%lld\n", d); ^ main.c:35:26: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'int' [-Wformat=] fprintf(out, "%lld\n", d); ^ main.c:6:25: warning: unused variable 'c' [-Wunused-variable] long long int a, b, c, bp; ^ main.c:6:19: warning: unused variable 'a' [-Wunused-variable] long long int a, b, c, bp; ^ main.c:9:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &b); ^~~~~~~~~~~~~~~~~~~~~~