"C allows you to define enumerated types which allow you to define a fixed list of possible values. For example, the days of the week or months of the year are possible values used in a date. However, they are more-or-less fixed (no one will be adding a new day of the week or month any time soon). An enumerated type allows us to define these values using human-readable keywords (much like the #define macro). To declare an enumerated type we use the keywords typedef enum (short for type definition and enumeration). We then provide a comma delimited list of keywords inside a code block. At the end of the code block we provide the type’s identifier. That is, the name of the type itself. For example, the names of integer and floating-point types in C are int and double respectively. This identifier gives our type a name that we can later use to declare variables of that type. Consider the following example.\n\n1 typedef enum {\n\n2 SUNDAY,\n\n3 MONDAY,\n\n4 TUESDAY,\n\n5 WEDNESDAY,\n\n6 THURSDAY,\n\n7 FRIDAY,\n\n8 SATURDAY\n\n9 } DayOfWeek;\n\nIn this example we’ve defined an enumeration of the days of the week. The name of the type itself is DayOfWeek and we can now declare variables of this type. The possible 309"