Use of typedef

A typedef is a user-defined synonym for an existing type. To create a synonym for a type, you use the keyword typedef followed by the name of the type and the new name you are defining.


E.g. typedef unsigned int uInt; 


Here uInt will be synonym for type unsigned int. 


The following line of code actually produces an int* which is x and an int (not an int*) which is y. That is, the ‘*’ binds to the right, not the left.


int * x, y; 


However, if you use a typedef:

typedef int* intPtr;

intPtr x, y;

                  

Then both x and y are of type int*.