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

## 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:**

- Take input of both the matrices from the user.
- 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:**

- Using Nested for loop, we insert the matrices element.
- We subtract the corresponding elements of matrices.
- Run two loops, i ->0 to n and j->0 to n.
- 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]

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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