Sum of diagonals of a 2D Array || what is an 2d Array || Arrays in C || Array Problem 3

Описание: Understanding how to calculate the sum of diagonal elements of a 2D array is an essential part of mastering C programming and 2D array concepts. In this in-depth video, we explain everything you need to know—from the basics of matrix representation to identifying primary and secondary diagonal elements, and finally writing a complete C program that performs the calculation accurately.

✅ What You’ll Learn in This Video

What is a 2D array and how it is stored in memory

Primary (main) diagonal vs secondary diagonal elements

How row and column indices help in locating diagonal elements

Logic building for diagonal sum

Step-by-step dry run of the program

Full C code with explanation

Practical output demonstration

✅ Why This Topic is Important

Diagonal sum programs are commonly asked in college practical exams, viva questions, coding tests, and interview rounds. Understanding this concept strengthens your basics of loops, indexing, and matrix traversal.

✅ Who Should Watch

Students learning C programming

Beginners preparing for exams

Anyone practicing 2D array programs

CS/IT diploma, BCA, B.Tech, and engineering students

By the end of this video, you will confidently understand how to work with 2D arrays and implement diagonal operations in C.
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