[Two dimension array] C program to read matrix and print its diagonal

[Two dimension array] C program to read matrix and print its diagonal

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Code Explanation :

This is the example of C program. you must have following topics to understand this example.

Here, at first we have define fixed row and column using #define keyword.

Suppose we have a example of 4 X 4 matrix which can be represent as

A00 A01 A02 A03
A10 A11 A12 A13
A20 A21 A22 A23
A30 A31 A32 A33

Here, A00, A11, A22, A33 are known ad primary diagonal and to print this diagonal, following condition must match:

 row = column

We can also print seconday diagonal (A03, A12, A21, A30).

To print this following condition must match:

 row = numberOfRows - column -1

In this process we use two loops, i.e. a loop for columns and a loop for rows, and we test for the above condition in the inner loop.

We are going to represent this code into algorithm and flowchart.


STEP 1 : Start

STEP 2 : Declare MAXROW, MAXCOL, matrix[MAXROW][MAXCOL], i, j, r and c

STEP 2 : Initialize MAXROW = 10 and MAXCOL = 10

STEP 4 : Repeat this step until i < r
        STEP 4.1 : Repeat this step until j < c
                STEP 4.1.1 : Read element matrix[i][j]
                STEP 4.1.2 : j++
        STEP 4.2 : i++

STEP 5 : IF r == c THEN
        STEP 5.1 : Repeat this step until i < c
            STEP 5.1.1 : Repeat this step until j < c
                    STEP : IF i == j THEN
                                        Print element matrix[j][i]
                                        print tab using "t"
                    STEP : j++
            STEP 5.1.2 : print line break using "t"
            STEP 5.1.3 : i++
            print "Matrix is not a Square Matrix"

STEP 6 :End


C Program to Add Two Matrices Using Multi-dimensional Arrays

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  • Doubly Linked List Programs

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