C Program

Object:-Write a Program to multiply two matrix.

``````#include<stdio.h>
int main()
{
int a[5][5],b[5][5],c[5][5],m,n,p,q,i,j,k;

printf("Enter rows and columns of first matrix:");
scanf("%d%d",&m,&n);
printf("Enter rows and columns of second matrix:");
scanf("%d%d",&p,&q);
if(n==p)
{
printf("Enter first matrix:");
for(i=0;i < m;++i)
for(j=0;j < n;++j)
scanf("%d",&a[i][j]);
printf("Enter second matrix:");
for(i=0; i < p;++i)
for(j=0; j < q;++j)
scanf("%d",&b[i][j]);
printf("The new matrix is:");
for(i=0; i < m;++i)
{
for(j=0; j < q;++j)
{
c[i][j]=0;
for(k=0; k < n;++k)
c[i][j]=c[i][j]+(a[i][k]*b[k][j]);
printf("%d ",c[i][j]);
}
printf(" ");
}
}
else
printf("nSorry!!!! Matrix multiplication can't be done");
return 0;
}
``````

### Output

```Enter rows and columns of first matrix:3
3

Enter rows and columns of second matrix:3
3

Enter first matrix:
1 2 3
4 5 6
7 8 9

Enter second matrix:
9 8 7
6 5 4
3 2 1

The new matrix is:
30 24 18
84 69 54```

### Explanation

```In this program,we have perform the multiplication of two matrix.

For multiplication of matrix,Column of first matrix should be equal to the row of second matrix.
```

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