what is the purpose of typedef in c
typedef typedef is a reserved keyword in the C and C++ programming languages. It is used to create an alias name for another data type.[1] As such, it is often used to simplify the syntax of declaring complex data structures consisting of struct and union types, but is just as common in providing specific descriptive type names for integer data types of varying lengths. The C standard library and POSIX reserve the suffix '_t', for example as in size_t and time_t.
Return type You declare a method's return type in its method declaration. Within the body of the method, you use the return statement to return the value.
C++ classes Instances of a class data type are known as objects and can contain member variables, constants, member functions, and overloaded operators defined by the programmer.
Ä Ä (lower case ä) is a character that represents either a letter from several extended Latin alphabets, or the letter A with an umlaut mark or diaeresis.