CA208 1997 Term 3 (Set 3)
QUESTION [(Compulsory)

a.	Declare a structure to store the following information.

	Employeeinfomation
	Employee name: Tom Brown
	Employee address: 21 Queens Street
	Age: 25
	Salary : $2,500.00	[5 marks]

b. Declare an array of 5 for the above structure and initialise all attributes
of the 5 copies using the assignment operator or strcpy function. Numbers
may be initialised to 0 and characters to space.
[9 marks]

c. Under what circumstances a variable can be used as a pointer when it is not declared a pointer? [2 marks] 

d. What is the difference between a structure and a union?
[4 marks]


QUESTION 2
Assume that a user keys in a number N. Accept the
..
number and write the following functions:
a. Write the main to accept the number N from user and invoke the next 2
functions and print out the results. [10 marks]

b.	Write a recursive function that adds from N to 1 [5 marks]
c.	Write a recursive function that adds from 1 to N. [5 marks]

QUESTION 3
	int num, number[5];
	int *iptr;
	a. iptr = num;
	Is the above statement legal?	If it is not,	explain
	and correct the error.
		[3 marks]
	b. iptr = &number[0];
	Is the above statement legal?	If it is not, explain and correct the error.
		[2 marks]

c. Is there an alternative to part (b)? Write down the alternative. [2 marks]

	d.	What is the output of the following segment of code?

int number[] = { 5,10,15,20,25,30}; int *iptr, count;

iptr = &number[2]; 
*(iptr-2) = 50; 
--iptr; 
*iptr = 100; 
*(iptr+2) = 200; 
++iptr = 150; 
number[4] = 250; 
iptr = iptr + 3; 
*iptr = 300;

for( count = 0; count < 6; count ++) 
   printf("%d",number[count]); [10 marks]

e.	What's the difference between *(iptr+2) and iptr += 2?
[3 marks]

QUESTION 4
a. Write a program that simulates the strlen function in
	C.	[7 marks]




b. Write a program that initialises an array with value from 1 to 10 and copy the content of this array of this array to another array. [13 marks]


QUESTION 5
a. Rewrite the following using the while loop and the do
	while loop.
	for ( i=0; ic10; i++)
	counter++;	[9 marks]

b. State the difference between the for-loop and the
while-loop and the difference between the while-loop and the do-while loop. 
[4 marks]

c. Rewrite the following using a switch-case statement.
[7 marks]

if (x==10) printf("Full marks");
else if (x==5)	
printf("Just passe);
else if (xc5)
printf("Fail");