# HCL Computer Programming questions

**HCL Computer Programming questionsÂ **

**COMPUTER PROGRAMMING PRINCIPLES AND APPLICATIONS**

Q1. A 8-bit signed integer has the following range:

a. 0 to 255

b. -128 to 127

c. -255 to 254

d. 0 to 509

Q2. What will be the output of the following code statements?

integer x = 34.54, y = 20, z = -5

print ( y > 50 AND z > 10 or x > 30 )

a. 0

b. 1

c. -1

d. 10

Q3. Pankaj makes a program to print the product of cubes of the first 10 whole numbers. She writes the following program:

integer x = 0 // statement 1

integer sum = 0 // statement 2

while ( x < 10 ) // statement 3

{

sum = x*x*x // statement 4

x = x + 1 // statement 5

}

print sum // statement 6

Is her program correct? If not, which statement will you modify to correct it?

a. No error, the program is correct.

b. Statement 1

c. Statement 4

d. statement 6

Q4. I have a problem to solve which takes as input a number n. The problem has a property that given the solution for (n-1), I can easily solve the problem for n. Which programming technique will I use to solve such a problem?

a. Iteration

b. Decision-making

c. Object Oriented Programming

d. Recursion

Q5. Given:

integer x = 40, y = 35, z = 20, w = 10

Comment about the output of the following two statements:

print x * y / z – w

print x * y / (z – w)

a. Differ by 80

b. Same

c. Differ by 50

d. Differ by 160

Q6. Data and function in which area of a class are directly accessible outside the class?

a. Public

b. Private

c. Protected

d. None of these

Q7. Here is an infix notation: ((A+B)*C-(D-E))^(F+G) Choose the correct postfix notation of the above from the given options.

a. AB+CD*E–FG+^

b. AB+C*DE–FG+^

c. AB+C*DE-FG-+^

d. A+BC*DE-FG-+^

Q8. If the depth of a tree is 3 levels, then what is the size of the Tree?

a. 2

b. 4

c. 6

d. 8

Q9. One of the following options is a form of access used to add and remove nodes from a queue.

a. LIFO

b. FIFO

c. Both LIFO and FIFO

d. None of these

Q10. What is the time complexity of adding three matrices of size NXN cell-by-cell?

a. O(N)

b. O(N^2)

c. O(N^3)

d. None of these