Difference between user defined function or standard c library?

Answer 1

satandard fuction is pre define fuction like getch(),clrscr(), in c++

and userdefine fuction is self created by use to do a particular work

ex of use definefuction

int add(int a,int b)

{

int c;

c=a+b;

return(c);

};

Answer 2

• LF(library functions) are Predefined functions.

• UDF(user defined functions) are the function which r created by user as per his own requirements.

• UDF are part of the program which compile runtime

• LF are part of header file

  (such as MATH.h) which is called runtime.

• In UDF the name of function id decided by user

• in LF it is given by developers.

• in UDF name of function can be changed any time

• LF Name of function can't be

  changed.

Example : SIN, COS, PowerExample : fibo, mergeme

Answer 3

it seems like the answer is in the question....

Answer 4

library function is a pre-defined function

Answer 5

in user defined function we can make our library according to our need bt in library function , funtions are already defined only we have to call that function