To preform multiplication two matrix we need two know about the way of multiplication in matrix. In matrix multiplication process as below :
For Example :
We have two matrix A[2][2] and B[2][2], And we store the result in third matrix C[2][2]. Now when we performing multiplication we get the result in third matrix as follow.
C[0][0] = A[0][0] * B[0][0] + A[0][1] * B[1][0]
C[0][1] = A[0][0] * B[0][1] + A[0][1] * B[1][1]
C[0][2] = A[1][0] * B[0][0] + A[1][1] * B[1][0]
C[0][3] = A[1][0] * B[0][1] + A[1][1] * B[1][1]
C program to multiplication of two matrix
#include<stdio.h>
void main()
{
int a[3][3],b[3][3],c[3][3];
int i,j,k;
clrscr();
printf("Enter elements in First array : \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("Enter elements in Second array : \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&b[i][j]);
}
}
printf("Matrix A\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("%d ",a[i][j]);
}
printf("\n");
}
printf("Matrix B\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("%d ",b[i][j]);
}
printf("\n");
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
c[i][j]=0;
for(k=0;k<3;k++)
{
c[i][j]=c[i][j]+a[i][k]*b[k][j];
}
}
}
printf("Multiplication of A & B Matrix : \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("%d ",c[i][j]);
}
printf("\n");
}
getch();
}
nice way
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