#include <stdio.h>

typedef struct mu{
   const char* s;
   unsigned n;
} mu;

#define o(s) {s,sizeof(s)}


int main()
{
   mu t1=o("___\0+++\0---");
   printf("%d : \"%.*s\"\n",t1.n,t1.n,t1.s);
   return 0;
}