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45 interview questionsfor developers (2024)

Test your developer skills before an interview with 45 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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45 questions
Easy
2 votes656 runs2 comments

What is the size of a long long in C++?

IT Architect
c++
memory
Vincent Cotroat Nov 3, 2023
Medium
2 votes187 runs1 comment

Write a C program to calculate the total number of sweets.

IT Architect
printf
error
Kahinaat Mar 21, 2022
Easy
2 votes141 runs0 comment

Find the sum of all even numbers in an array in C

IT Architect
array
for loop
Vincent Cotroat Mar 23, 2023
Medium
2 votes76 runs0 comment

Undefined behavior.

IT Architect
memory
pointers
Abha Agrawaat Jan 2, 2024
Easy
1 vote201 runs1 comment

Include a .h library in C

IT Architect
header files
libraries
Kahinaat Jan 2, 2024
Medium
1 vote195 runs1 comment

What can we say about the variable a?

IT Architect
variables
scope
Kahinaat Apr 6, 2022
Easy
1 vote186 runs0 comment

Write a C program that prints the number of years a child needs to grow to be able to ride a roller coaster.

IT Architect
loops
variables
Kahinaat Apr 6, 2022
Easy
1 vote144 runs0 comment

Write a C function to swap two integers.

IT Architect
pointers
functions
Vincent Cotroat Mar 21, 2023
Easy
1 vote129 runs0 comment

Print the 4th element of an array in C

IT Architect
arrays
c
Vincent Cotroat May 19, 2023
Medium
1 vote106 runs0 comment

Write a C program that calculates the average of two notes.

IT Architect
constants
assignment
Kahinaat Mar 21, 2022
Medium
1 vote18 runs0 comment

What can be problematic in this code ?

IT Architect
c
functions
Kahinaat Apr 6, 2022
Easy
0 vote233 runs0 comment

What does the following block of statements do?

IT Architect
preprocessor
include
Kahinaat Apr 6, 2022
Medium
0 vote227 runs1 comment

Write a C program that prints the number of bottles of soda you need to bring to a party.

IT Architect
variables
arithmetic
Kahinaat Jan 2, 2024
Easy
0 vote209 runs0 comment

What is a file .o?

IT Architect
object file
compilation
Kahinaat Sep 19, 2022
Easy
0 vote204 runs1 comment

How is the variable 'p' initialized?

IT Architect
pointers
memory
Kahinaat Jan 2, 2024
Medium
0 vote196 runs1 comment

What does the following code refer to: C:\ProgramFiles\QtCreator\text.txt ?

IT Architect
strings
file
Kahinaat Dec 13, 2023
Medium
0 vote195 runs0 comment

Find the mistake in the following C code:

IT Architect
c
error
unsigned
Kahinaat Apr 6, 2022
Easy
0 vote195 runs0 comment

How do you recognize preprocessor directives in C?

IT Architect
preprocessor
directives
Kahinaat Mar 21, 2022
Easy
0 vote194 runs0 comment

What type is the variable 'p'?

IT Architect
pointers
Kahinaat Mar 21, 2022
Easy
0 vote186 runs0 comment

What type is the variable returned by the following function?

IT Architect
functions
void
Kahinaat Apr 6, 2022