Function in C:-
-A function is a block or group of statements that perform a specific task. A block of code with a unique name performing Some specific task, which can be used multiple Itimes throughout the execution.
-Using function is a good practice as it provides features of modularity a reusability. Modularity means, the large fundo program can be divided into sub program separatly and use it again & again i.e. code reusability.
In c function is divided into two types such as
1)Predefined functions
2)userdefined functions
-predefined or library functions! -
-It is a predefined functions which is declared in c headerfiles.
-These function are used to performing common mathematical calculation, string manipulation etc.
-Example! printf(), scanf(), closes (), et getch(), strlenci, sqrt(x), pow (x,y) etc.
user-defined functions: -
-The function defined by the programmer as per their requirement is known as user defined functions.
-A function is a self-contained block of code that perform a particular or specific task.
-It is subprogram that contain group of statement will be executed a particular task.
-user defined function is basically a set of statements that takes input, perform some instruction & produces output.
-once user defined function has been designed, it can use again and again i.e. code reusable.
- it can achive modularity means large program are devided into sub program have well defined specfic task.
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