What is Linker? Why is it required?

Hello Friends, in this blog post I am going to let you know about the linker in a programming language. You will know what this all about and why is it used in the execution of a program.

Generally, a modular approach is used to develop reasonably sized software. In this approach, the software is divided into a number of smaller subprograms called modules and separate source programs are written for each module of the software. It is easier to develop, test and debug smaller programs.

Each source program file can be modified and compiled independently of another source program file to create a corresponding object program file.


A linker is a program that is used to properly combine all the object program files(Modules) of the software and to convert them into the final executable program, which is called a load module.

it means that a linker takes object program files(Modules), and fits them together to assemble them into the program’s final executable form.

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