The Keyword typedef

Some usages for the keyword typedef.

1. Introduce a synonym for fundamental types.

   typedef int Integer;

2. Introduce a synonym for pointer types.

   typedef char *pChar;

3. Introduce a synonym for reference types.

   typedef double &refDouble;

4. Introduce a synonym for struct, union, enum in C.

   typedef struct {int key; NODE *next;} NODE;

5. Introduce a synonym for struct or class in C++.

   typedef class Old New;
   typedef Old New;

6. Introduce a synonym for array types.

   typedef double dArray[10];

7. Introduce a synonym for function types.

   typedef void Func(int, double);

8. Introduce a synonym for function pointer types.

   typedef (void *)FuncPtr(int, double);