How can I effectively perform matrix operations in C programming language?

[Henry R]

Good day everyone. I'm learning C language at the moment. Plus, matrix is bit harder. It just I couldn't understand how to write it in C programming language. Plus, it's maths calculations.
I have to use C language for this, not C++.Here's the question :
A matrix is an array of numbers which can be used in calculations. You are required to create a two 2 x 2 matrices, and perform a matrix addition and a matrix multiplication.

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a) The sum of A and B, denoted by A+B, is the m x n matrix, which is obtained by adding elements in the corresponding positions.
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b) The product of A and B denoted by AB, is m × n matrix with (i,j)th entry equal to the sum of the products of the corresponding elements from the ith row of A and the jth column of B. In other words, if AB = [cij], then

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[alyafey22]

The following should create a 2x2 array

int a[2][2] = {{1,2},{3,4}};
//where a[0][0] = 1 , a[0][1] = 1 , a[1][0] = 1 , a[1][1] = 1

to get or a set an element you can use $a[j]$ where $i$ represents the row and $j$ represents the column.

 

[Henry R]

The following should create a 2x2 array

int a[2][2] = {{1,2},{3,4}};
//where a[0][0] = 1 , a[0][1] = 1 , a[1][0] = 1 , a[1][1] = 1

to get or a set an element you can use $a[j]$ where $i$ represents the row and $j$ represents the column.

How about the code? I mean, can you show me the complete code?;) Sorry, if this sound annoying. But, I try my best on programming.

 

[alyafey22]

Can you post your attempt ? then if there are mistakes we can correct them.