Write a program that de%uFB01nes 3 matrices A, B and C of size 3x3 with int elem

Question

Write a program that de%uFB01nes 3 matrices A, B and C of size 3x3 with int elements. The

matrizes should be represented as 2D-arrays. Have the user input matrizes A and B row-by

row, as shown in the below example. Compute the matrix product of A and B and store the

result in C (i.e., C = A*B). Print matrix C on the screen. You can %uFB01nd more information on the matrix product at the following wikipedia page (scroll down to %u201CMatrix Product%u201D):

http://en.wikipedia.org/wiki/Matrix_multiplication.

To format the output of matrix C, you must determine the largest number occurring in matrix C,

and output all numbers with this %uFB01eld width to make matrix columns aligned. For example, in

the below result matrix C, the largest number is 12. 12 has 2 digits, so all numbers must be

output with a %uFB01eld width of two. Note also the additional blank to separate columns.

Enter matrix A:

1 2 3

1 2 3

1 1 1

Enter matrix B:

1 2 1

1 2 1

2 2 3

Product matrix C:

9 12 12

9 12 12

4 6 5

Explanation / Answer

#include<stdio.h>

int main(){

int a[5][5],b[5][5],c[5][5],i,j,k,sum=0,m,n,o,p;

printf(" Enter the row and column of first matrix");

scanf("%d %d",&m,&n);

printf(" Enter the row and column of second matrix");

scanf("%d %d",&o,&p);

if(n!=o){

printf("Matrix mutiplication is not possible");

printf(" Column of first matrix must be same as row of second matrix");

}

else{

printf(" Enter the First matrix->");

for(i=0;i<m;i++)

for(j=0;j<n;j++)

scanf("%d",&a[i][j]);

printf(" Enter the Second matrix->");

for(i=0;i<o;i++)

for(j=0;j<p;j++)

scanf("%d",&b[i][j]);

printf(" The First matrix is ");

for(i=0;i<m;i++){

printf(" ");

for(j=0;j<n;j++){

printf("%d ",a[i][j]);

}

}

printf(" The Second matrix is ");

for(i=0;i<o;i++){

printf(" ");

for(j=0;j<p;j++){

printf("%d ",b[i][j]);

}   

}

for(i=0;i<m;i++)

for(j=0;j<p;j++)

c[i][j]=0;

for(i=0;i<m;i++){ //row of first matrix

for(j=0;j<p;j++){ //column of second matrix

sum=0;

for(k=0;k<n;k++)

sum=sum+a[i][k]*b[k][j];

c[i][j]=sum;

}

}

}

printf(" The multiplication of two matrix is ");

for(i=0;i<m;i++){

printf(" ");

for(j=0;j<p;j++){

printf("%d ",c[i][j]);

}

}

return 0;

}

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