4 #define LENGTH(x) (sizeof(x) / sizeof(*x))
5 #define MAX(A, B) ((A) > (B) ? (A) : (B))
6 #define MIN(A, B) ((A) < (B) ? (A) : (B))
7 #define BOOLSTR(A) ((A) ? "true" : "false")
10 # define PUTS(x) puts(x);
11 # define PRINTF(x,...) printf(x, ##__VA_ARGS__);