The advantages of using typedef do not include:a. Making programs more portable by allowing data types to be easily changed to meet system specifications. b. Making type names shorter. c. Making programs more readable. d. Increasing the efficiency of accessing struct member variables.

d. Increasing the efficiency of accessing struct member variables.

Explanation:

In the programming language C and C++ there is a keyword i.e typedef that function is to provide a new name. It is to be used to develop an extra name for the other data type but it does not develop a new data type

Here the advantage of using typedef is as follows

1. It allows the data types for meeting the specifications of the system

2. The name would become shorter

3. Readable program

but it does not increase the efficiency

Hence, the last option is correct

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