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 1. What are actual parameters, formal parmaeters, Local Variables. Mark
    the actual parameters, formal prameters, local variables in the following 
    program.
	
	program MyProgram
	implicit none
	integer:: myfunction
	integer:: n1, n2
	....
	print*, myfunction(n1, n2)
	end Program
	
	Integer function myfunction(m1,m2)
 	integer:: m1, m2
	integer:: newvar
	....
 	end function myfunction

 2. What are intrinsic functions and  user-defined functions? What are the uses 
    of functions?
 	 
 3. What do the following statements do
	INTEGER FUNCTION MYFUNCTION(NUM1, NUM2, NUM3)
	INTEGER, INTENT(IN):: NUM1
	INTEGER, INTENT(INOUT):: NUM2
	INTEGER:: NUM3  
 	 	.....
	END FUNCTION MYFUNCTION

 4. Write a function  for counting the number of occurences of a 
    particular  character in a string.

 5. What is recursion. Write a recursive function for finding the 
    factorial of a number
	   
 6. Write a function for finding the nth Fibonacci number, where 
    fibonacci number is defined as 
	Fib(0) = 0, Fib(1) = 1
	Fib(n) = Fib(n-1) + Fib(n-2).
    write a recursive function. How many times does the function 
    FIB be called,for n = 5

 7. Write a function for finding the GCD of two numbers n1, n2
	GCD(n1, n2) = n2, if n1 = 0
		    = GCD(n2,n1), if n1< n2
		    = GCD(n1, mod(n2, n1)), otherwise
	 
  
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