How To Teach c program for multiplication of two matrices Like A beginner

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In this program, we will understand how to write a c program for matrix multiplication. C knowledge is required to understand this program. We will try to understand the simple way c program for multiplication of two matrices.

What is the matrix?

A matrix is an arrangement of numbers into rows and columns.

Rows: A horizontal series of a number 

Columns: A vertical series of a number

  

What is the matrix multiplication?

First of all, you can imagine the output screen then build your logic.

Enter first matrix:2

2

2

2

2

2

2

2

2

|2  2  2| 

|2  2  2|

|2  2  2|

Enter the second matrix:2

2

2

2

2

2

2

2

2

|2  2  2| 

|2  2  2|

|2  2  2|

The product of two matrices is:

|12 12  12|

|12 12  12|

|12 12  12|

You must have this knowledge

basic c, loop, nested loop, array

Program logic

1. First, we made two arrays for two dimensional.
2. Then we took input from the user via a nested loop.
3. Then apply the nested loop. And multiply the row of the first array in the column of the second array and then sum. And then store it in a variable of the sum name. And then data store into a new array. 

After that, we print the result for the matrix form.

matrix mulitplication program

#include<stdio.h> main() { int firstmatrix[3][3],secondmatrix[3][3],mulmatrix[3][3],k,i,j,sum; printf("Enter first matrix:"); for(i=0;i<=2;i++) for(j=0;j<=2;j++) scanf("%d",&firstmatrix[i][j]); for(i=0;i<=2;i++) { for(j=0;j<=2;j++) printf("|%d| ",firstmatrix[i][j]); printf("\n"); } printf("\n\nEnter second matrix:"); for(i=0;i<=2;i++) for(j=0;j<=2;j++) scanf("%d",&secondmatrix[i][j]); for(i=0;i<=2;i++) { for(j=0;j<=2;j++) printf("|%d| ",secondmatrix[i][j]); printf("\n"); } printf("\n\n\n\n\n"); for(i=0;i<=2;i++) for(j=0;j<=2;j++) { sum=0; for(k=0;k<=2;k++) sum=sum+firstmatrix[i][k]*secondmatrix[k][j]; mulmatrix[i][j]=sum; } printf("\nProduct of two matrices is:\n"); for(i=0;i<=2;i++) { for(j=0;j<=2;j++) printf("|%d| ",mulmatrix[i][j]); printf("\n"); } return 0; }

Output Screen

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Now next you are, write your code in the comment below.😊