Question

Difference between built in function and user defined function in c

Answer 1

Answer:

user defined functions' functions and names are all defined by the user while built-in functions have predefined names and functions, without built-in functions, creating an user defined function would've been impossible.

hope you find it helpful. :)

Answer 2

Answer:

Explanation:

Build in function

Built-in functions are the functions that are provided by any language library. In the programming world, many activities are done by using a built-in function. A library function is accessed simply by writing the function name, followed by an optional list of arguments.

for example In C language:

builtin function are :

pintf();

scanf();

fopen();

and lot more

User-defined function ::

User has to define some functions themselves in order to have their work done. And such functions are called user-defined functions.

Here we can implement our own function like to add two numbers we can implement function.