typedef int Mark;
Mark johnsMark;
johnsMark = 100;

typedef enum { FL, PS, CR, DN, HD } Grade;
Grade johnsGrade;
johnsGrade = HD;

typedef char String[100];
String s, t;
String s = {'a','b','c','\0'};
// s = "abc"; ...is INVALID -- why?
// t = s; ... is INVALID -- why?
strcpy(s, "abc");
strcpy(t, s);

typedef float Vector[10];
Vector v = {1,2,3,4,5,6,7,8,9,10}, u;
// u = v;  ... is INVALID -- why?

typedef char *StringArray[1000];
StringArray xx;

typedef char Date[11];
Date today;
strcpy(today, "26-08-2015");
printf("Year is %s\n",  &today[6]);   // produces 2015