Write a C program to find Determinant of Matrix

By | 18.11.2016

Find determinant of matrix


Write a C program to find determinant of matrix. Here’s simple program to find determinant of matrix in C Programming Language.


What is Matrix ?


Matrix representation is a method used by a computer language to store matrices of more than one dimension in memory. C uses “Row Major”, which stores all the elements for a given row contiguously in memory.

Two-dimensional Arrays : :

The simplest form of multidimensional array is the two-dimensional array. A two-dimensional array is, in essence, a list of one-dimensional arrays. An m × n (read as m by n) order matrix is a set of numbers arranged in m rows and n columns.

To declare a two-dimensional integer array of size [x][y], you would write something as follows −

  • type arrayName [ x ][ y ];

Where type can be any valid C data type and arrayName will be a valid C identifier.


Below is the source code for C program to find determinant of matrix which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/*  C program to find determinant of matrix  */

#include <stdio.h>

int main()
{
    int A[2][2];
    int row, col;
    long det;

    /*
     * Reads elements in matrix A from user
     */
    printf("\nEnter values to the matrix 2x2 :: \n");
        for(row = 0; row<2; row++)
        {
            for(col = 0; col<2; col++)
            {
                 printf("\nEnter a[%d][%d] value :: ",row,col);
                 scanf("%d", &A[row][col]);
        }
    }

    /*
     * det(A) = ad - bc
     * a = A[0][0], b = A[0][1], c = A[1][0], d = A[1][1]
     */
    det = (A[0][0] * A[1][1]) - (A[0][1] * A[1][0]);

    printf("\nDeterminant of matrix A = %ld ", det);

    return 0;
}

Output : :


/*  C program to find determinant of matrix  */

Enter values to the matrix 2x2 ::

Enter a[0][0] value :: 3

Enter a[0][1] value :: 4

Enter a[1][0] value :: 5

Enter a[1][1] value :: 6

Determinant of matrix A = -2

Process returned 0

Above is the source code for C program to find determinant of matrix which is successfully compiled and run on Windows System.The Output of the program is shown above .

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About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

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