# How do you multiply two matrices using pointers?

## How do you multiply two matrices using pointers?

How to multiply two matrices using pointers in C?

1. Pointer saves the memory space.
2. The execution time of a pointer is faster because of the direct access to a memory location.
3. With the help of pointers, the memory is accessed efficiently i.e. memory is allocated and deallocated dynamically.

Can you multiply pointers in C?

Not only multiplying, even addition and division are also not allowed in pointers. The only operation you can do is subtraction, if both the pointers are of same type.

### Can matrix multiply in C?

Matrix multiplication in C: We can add, subtract, multiply and divide 2 matrices. To do so, we are taking input from the user for row number, column number, first matrix elements and second matrix elements. Then we are performing multiplication on the matrices entered by the user.

Can we solve matrix multiplication using recursion?

In Recursive Matrix Multiplication, we implement three loops of Iteration through recursive calls. The inner most Recursive call of multiplyMatrix() is to iterate k (col1 or row2). The second recursive call of multiplyMatrix() is to change the columns and the outermost recursive call is to change rows.

## How do you multiply in C?

Program to Multiply Two Numbers printf(“Enter two numbers: “); scanf(“%lf %lf”, &a, &b); Then, the product of a and b is evaluated and the result is stored in product . product = a * b; Finally, product is displayed on the screen using printf() .

Can 2 pointers be multiplied?

yes it is allowed, *x is not a pointer but a value pointed by x . and hence *x+*y; is addition of two values pointed by x and y .

### What are the rules for matrix multiplication?

For matrix multiplication, the number of columns in the first matrix must be equal to the number of rows in the second matrix. The resulting matrix, known as the matrix product, has the number of rows of the first and the number of columns of the second matrix. The product of matrices A and B is denoted as AB.

What is Strassen matrix multiplication algorithm?

Strassen’s Algorithm is an algorithm for matrix multiplication. 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.

## What is the key idea of Strassen’s matrix multiplication algorithm?

The basic idea behind Strassen’s algorithm is to split A & B into 8 submatricies and then recursively compute the submatricies of C . This strategy is called Divide and Conquer. We then use these results to compute C’s submatricies. The above strategy is the basic O(N^3) strategy.

What is double in C?

A double is a data type in C language that stores high-precision floating-point data or numbers in computer memory. It is called double data type because it can hold the double size of data compared to the float data type. A double has 8 bytes, which is equal to 64 bits in size.

### What is LF in C?

For type long double, the correct format specifier is %Lf. For input using the scanf family of functions, the floating-point format specifiers are %f, %lf, and %Lf. These require pointers to objects of type float, double, and long double, respectively.

How to multiply two matrix using pointers?

Which will help in boosting your pointer knowledge. In array notation to multiply two matrix we use sum += A [row] [i] * B [i] [col]; which in pointer notation is equivalent to sum += (* (* (A + row) + i)) * (* (* (B + i) + col)); Program to multiply two matrix using pointers?

## What is matrix multiplication in C?

Matrix Multiplication in C. Matrix multiplication is another important program that makes use of the two-dimensional arrays to multiply the cluster of values in the form of matrices and with the rules of matrices of mathematics. In this C program, the user will insert the order for a matrix followed by that specific number of elements.

How do you write a multi-dimensional array in C with pointers?

Multi-dimensional array types are a little funny in C when you use pointers. The way I generally write such code is by representing a matrix as type int**. A value x of type int** is a pointer to a pointer to a value.

### How to multiply two matrices in Python?

In array notation to multiply two matrix we use sum += A [ row][ i] * B [ i][ col]; which in pointer notation is equivalent to sum += (*(*( A + row) + i)) * (*(*( B + i) + col));