# How do you write a matrix multiplication code?

## How do you write a matrix multiplication code?

C Program to Perform Matrix Multiplication

1. #include
2. int main()
3. {
4. int m, n, p, q, c, d, k, sum = 0;
5. int first[10][10], second[10][10], multiply[10][10];
6. printf(“Enter the number of rows and columns of first matrix\n”);
7. scanf(“%d%d”, &m, &n);
8. printf(“Enter the elements of first matrix\n”);

What is Strassen’s matrix multiplication with example?

Strassen algorithm is a recursive method for matrix multiplication where we divide the matrix into 4 sub-matrices of dimensions n/2 x n/2 in each recursive step. For example, consider two 4 x 4 matrices A and B that we need to multiply. A 4 x 4 can be divided into four 2 x 2 matrices.

### Is Strassen divide and conquer?

Strassen’s method is similar to above simple divide and conquer method in the sense that this method also divide matrices to sub-matrices of size N/2 x N/2 as shown in the above diagram, but in Strassen’s method, the four sub-matrices of result are calculated using following formulae.

How do you multiply and divide matrices?

In order to multiply matrices,

1. Step 1: Make sure that the the number of columns in the 1st one equals the number of rows in the 2nd one. (The pre-requisite to be able to multiply)
2. Step 2: Multiply the elements of each row of the first matrix by the elements of each column in the second matrix.
3. Step 3: Add the products.

## What is matrix multiplication in C++?

Matrix multiplication in C++ is a binary operation in which two matrices can be added, subtracted and multiplied. Input for row number, column number, first matrix elements, and second matrix elements is taken from the consumer to multiply the matrices. Then the matrices entered by the consumer are multiplied.

How do you program a matrix multiplication in C++?

Matrix multiplication in C++

1. #include
2. using namespace std;
3. int main()
4. {
5. int a[10][10],b[10][10],mul[10][10],r,c,i,j,k;
6. cout<<“enter the number of row=”;
7. cin>>r;
8. cout<<“enter the number of column=”;

### What is the complexity of Strassen’s matrix multiplication in divide and conquer?

Hence, the complexity of Strassen’s matrix multiplication algorithm is O(nlog7).

How do you do matrix multiplication in C++?

## Is binary search divide and conquer algorithm?

Binary Search is an extremely well-known instance of divide-and-conquer paradigm. Given an ordered array of n elements, the basic idea of binary search is that for a given element we “probe” the middle element of the array.

Can you multiply a 2×3 and 3×3 matrix?

Multiplication of 2×3 and 3×3 matrices is possible and the result matrix is a 2×3 matrix.