extern int printf(const char *format, ...); #define ACPI_TYPE_INVALID       0x1E#define NUM_NS_TYPES            ACPI_TYPE_INVALID+1int array[NUM_NS_TYPES]; #define n 0xeint main(){    printf("n+1 = %d\n", n+1);//    printf("n+1 = %d\n", 0xe+1);}