Compilare: user.c: In function ‘main’: user.c:13:1: warning: format ‘%lld’ expects argument of type ‘long long int *’, but argument 3 has type ‘long int *’ [-Wformat=] fscanf(file1, "%lld", &N); ^ user.c:17:5: warning: format ‘%lld’ expects argument of type ‘long long int *’, but argument 3 has type ‘long int *’ [-Wformat=] fscanf(file1, "%lld", &element); ^ user.c:27:1: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(file2, "%lld", a1); ^ user.c:28:1: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(file2, " %lld", an); ^ user.c:13:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &N); ^ user.c:17:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &element); ^