alokm014 Enlightened

December 9, 2023

How to Master Array Interview Questions in C?

Blog Link: https://embedthreads.com/how-to-master-array-interview-questions-in-c/

1. What is an array in C, and how are its elements accessed?
2. How do you declare and initialize an array in C? Provide examples.
3. How can you find the length of an array in C?
4. Explain the process of reversing an array in C. Share a code example.
5. How do you calculate the sum of all elements in an array in C?
6. In C, how can you check if an array is sorted in ascending order?
7. How do you find the second-largest and second-smallest elements in an array? Provide a code example.
8. Share a C code snippet to remove duplicates from an array.
9. How can you find the missing number in an array of consecutive integers? Provide an example.
10. Explain the process of finding the frequency of elements in an array using a frequency array. Share a code example.
11. How do you rotate an array to the right by k positions in C?
12. Explain Kadane’s algorithm and how it is used to find the largest subarray with the maximum sum in an array. Provide an example.
13. How do you merge two sorted arrays into a single sorted array in C?
14. Explain how to find the kth smallest element in an unsorted array using the quickselect algorithm. Share a code example.
15. How do you find the median of an unsorted array in C?
16. Share a C code snippet to find a pair of elements in an array whose sum is equal to a given target value.
17. How can you rearrange an array in alternating positive and negative numbers in C? Provide an example.

alokm014 Enlightened

December 9, 2023

Common Myths About C++ in Embedded Systems

Blog Lik: https://embedthreads.com/debunking-common-myths-about-c-in-embedded-systems-part1

Embedded systems power our daily technologies, from household appliances to smartphones. While C has been the traditional choice, C++ is gaining momentum. Dispelling myths:

– C++ isn’t slower; optimized code matches C.
– C++ doesn’t produce bloated code; modern compilers are efficient.
– C++ objects aren’t inherently large; thoughtful design ensures memory efficiency.
– Virtual functions aren’t slow; minimal overhead outweighed by benefits.
– C++ is ROMable; with proper configuration, code can reside in ROM.
– Class libraries don’t necessarily lead to large binaries; selective inclusion and optimization are key.
– Abstraction in C++ doesn’t compromise efficiency; well-designed code enhances maintainability.

alokm014 Enlightened

December 9, 2023

Difference between #define and const in C?

Blog Link: https://embedthreads.com/difference-between-define-and-const-in-c/

Act I: #define
Magic of preprocessor for global changes.

Act II: const
Type-safe, acts like a variable, constant data.

Act III: Scope Control
Avoids global exposure, prevents errors.

Act IV: Build-time Config
#define for flexible build-time config.

Storage Chronicles:
#define substitutes, const in read-only memory.

Grand Finale: Choose Wisely
Blend #define’s dynamism, const’s reliability.

Happy coding!