C++ typedef

An overview of C++ typedef can be demonstrated in the article that follows. The typedef is the expression that programmers can utilize to develop new alternative terms for the standard types of data, such as int, float, struct, long, and short. It will not construct any new types of attributes; it merely provides the data types. If we utilize the typedef term, it provides the values that the user has to know whether we want to modify something in the program. We would highlight the programs utilizing basic possibilities for the data types, making it simple to drag declarations and the ability to ensure both the original and new update codes.

How Does typedef Operate Effectively?

The typedef term is typically one of the allocated ones; it maintains the identical abstraction level from the real data type and modifies the data types that developers can utilize to enable them to concentrate more on programming notions. Garbage collectors are the primary region for eliminating unnecessary codes and cleaning them for the data storage spaces. It is simpler to create and clean those programs by utilizing the destroy() function or any default techniques. The proportions have been determined based on the data types, and storage space is assigned for high memory data type elements and small portion storage elements.

The typedef statements are typically applied with two distinct methods, such as the declaration of the term typedef type and definition of the term typedef type signifier. Those two main typedef statements are supported with different title types alias, including some syntax statements for the language attribute values. The other type is provided with several software packages. Still, other POSIX requirements have been introduced with the typedef definitions, which are more frequently used within both prefixes and suffixes.

Furthermore, the typedef term is commonly utilized in specific documentation to specify the amount of a particular variable through incorporation in function, which might include statements with a wide range of unit measurements and counts.

Even if we will require some pointers in the syntax that we utilized the pointer in the typedef term, it constructs the specialized internal memory in the processor. And even the domain name of the attribute is also modified both in the original and new types of data. This term has also been utilized to modify the variable declarations for certain component types, such as struct, union, and many more. Even if the pointers are incorporated in the structure type, we might still utilize structure pointers in the typedef term that includes numerous attributes of the similar type and indicate single-level declarations. The typedef statement will be used to rewrite the previous line of code that specify operational pointers, which shortens and simplifies the codes’ length and complexity. The functional expressions would be more complex but indicated by accepting certain types or parameters, they may return particular variables.

Example No. 1

We have the integer data type the alias int. So, the variables “n_1” and “n_2” now operate like an integer. Take a glance at the following example:

#include <iostream>
using namespace std;
int main()
typedef int integer;
integer n_1, n_2, s;
cout<<"Please enter first value: ";
cout<<"Please enter second value: ";
 cout<<"Sum of these values = "<<s;

return 0;


At the start of the program, we will introduce the package <iostream>. Then, we will utilize the standard namespace. We declare typedef of integer data type. Next, we initialize three variables named “n_1”, “n_2”, and “s”. The “cout” statement will be used to show the message on the screen. Then “cin” statement is employed to take input from the user. A variable named “n_1” will hold the first number. The user will input the second value in the following step. Here, “n_2” stands for this value.

Now, we add these values to one another, and their sum is saved in the “s” variable. We have been using the “cout” statement to show the sum of these numbers. To terminate the code, the “return 0” command is applied.

Example No. 2

As we’ve seen, each time a new attribute is defined, the term struct will be included; however, whenever typedef is utilized, the declaration becomes simpler and looks like the following:

using namespace std;
struct exp
char *college;
int id;
typedef int *t;
int main()
struct exp m;
m.college = "We welcome you to College";
m.id = 9382;
cout << "Enjoy your day. " << m.college << '\n';
cout << "It's your Id Number: " << m.id;
t pvar;
return 0;


We will include the standard namespace and <iostream> header file. This header file is responsible for input and output functionalities. We will construct the structure of example “exp”. Then, we will create a pointer having a character data type and a variable having an integer data type. We declare a typedef of pointer *t having integer variables. We call it the main() method. Within this function, an object of the structure will be created. We specify the value of the object. Then, we define the id of the student. We have been employing the “cout” statement in the next step. This statement prints the text “Enjoy your day. It’s your Id” on the screen. In the end, the “return 0” command will be employed.

typedef Has the Following Benefits

    • It increases the portability of the code.
    • It simplifies complex declarations in the code.
    • The code may become more comprehensible and simpler.
    • It may facilitate code modification.


We have reviewed C++ typedef in this article. The C++ allocated particular keyword region is in typedef. It would have a variety of pre-defined expressions utilized in the application to execute the source code. We utilized it to minimize the source code and the storage regions. The pointer notions and attributes handled the original, and new types were utilized in the three instances to implement typedef in the various segments.

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Omar Farooq

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