HCL Technologies Technical-Database Contributed by Vaisak M updated on Dec 2021

# HCL Technical questions

HCL Computer Programming questions

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

All the Best!!!

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