Matrix Program in C using Array

Here all the Matrix programs in c using array are available. This program will add two matrices, subtract two matrices, and multiply two matrices.

• C Program for Multiplication of Matrix

Addition of matrices in c

In this Matrix program in c using an array, we will add two matrices. First, we insert numbers in the matrix entered by the user in Matrix A and Matrix B using for loop. Now we take another matrix that contains the addition of corresponding elements of matrices using for loop.

#include <stdio.h>
int main()
{
    int C[3][3], A[3][3], B[3][3], i, j, ch;
    printf("\n Matrix A\n");
    printf("\n Enter the numbers you want to insert :");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("\t");
            scanf("%d", &ch);
            A[i][j] = ch;
        }
    }
    printf("\n Matrix A:\n");

    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("%d", A[i][j]);
            printf("\t");
        }
        printf("\n");
    }
    printf("\n\n Matrix B");
    printf("\n Enter the numbers you want to insert in the matrix B:\n");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("\t");
            scanf("%d", &ch);
            B[i][j] = ch;
        }
    }
    printf("\n Matrix B:\n");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("%d", B[i][j]);
            printf("\t");
        }
        printf("\n");
    }
    printf("\n A+B=\n");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            C[i][j] = A[i][j] + B[i][j];
            printf("%d", C[i][j]);
            printf("\t");
        }
        printf("\n");
    }
    return 0;
}

Program to add Two Matrix in C

Approach for C program for addition of matrices:

1. Take input of both the matrices from the user.
2. Using Nested for loop, we add the corresponding elements of matrices. Run an outer loop from i=0 to number to rows & inner loop will run from j=0 to the number of columns. For this, we use the following statement:
   C[i][j]= A[i][j]+B[i][j];

Subtraction of two matrices in c

In this matrix program in c using an array, we will subtract two matrices. First, we insert numbers in the matrix entered by the user in Matrix A and Matrix B using for loop. Now we take another matrix that contains subtraction of corresponding elements of matrices using for loop.

#include <stdio.h>
int main()
{
    int C[3][3], A[3][3], B[3][3], i, j, ch;
    printf("\n Matrix A\n");
    printf("\n Enter the numbers you want to insert :");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("\t");
            scanf("%d", &ch);
            A[i][j] = ch;
        }
    }
    printf("\n Matrix A:\n");

    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("%d", A[i][j]);
            printf("\t");
        }
        printf("\n");
    }
    printf("\n\n Matrix B");
    printf("\n Enter the numbers you want to insert in the matrix B:\n");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("\t");
            scanf("%d", &ch);
            B[i][j] = ch;
        }
    }
    printf("\n Matrix B:\n");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            printf("%d", B[i][j]);
            printf("\t");
        }
        printf("\n");
    }
    printf("\n A+B=\n");
    for (i = 0; i < 3; i++)
    {
        for (j = 0; j <3; j++)
        {
            C[i][j] = A[i][j] - B[i][j];
            printf("%d", C[i][j]);
            printf("\t");
        }
        printf("\n");
    }
    return 0;
}

Approach for C program for subtraction of matrices:

1. Using Nested for loop, we insert the matrices element.
2.  We subtract the corresponding elements of matrices. 
3. Run two loops, i ->0 to n and j->0 to n.
4. Use C[i][j]= A[i][j]-B[i][j]; to perform subtraction of corresponding elements. 

Matrix program in c using array

Matrix: A matrix is an ordered array of numbers. We can only perform arithmetic operations like addition, subtraction, and multiplication of matrices in a square matrix. Square matrices are those which have the same number of rows and columns.

Following is the example of the square matrix: -
Matrix A
A[0][0] A[0][1] A[0][2]
A[1][0] A[1][1] A[1][2]
A[2][0] A[2][1] A[2][2]

We use a nested for loop to make a Matrix program in c using an array.

Questions and Answers

How do you declare a 2d array?
int A[r][c];
where r is the number of rows and c is the number of columns

What is a two-dimensional array?
A two-dimensional array is a matrix with several rows and columns.

What is a square matrix?
Square matrices are those which have the same number of rows and columns.

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