Array in C
/*Matrices Multiplication*/#include<stdio.h>
#include<conio.h>
void main()
{
int a[5][5],b[5][5],c[5][5],i,j,k,sum=0,m,n,o,p;
printf("\nEnter the row and column of first matrix");
scanf("%d %d",&m,&n);
printf("\nEnter the row and column of second matrix");
scanf("%d %d",&o,&p);
if(n!=o)
{
printf("Matrix mutiplication is not possible");
printf("\nColumn of first matrix must be same as row of second matrix");
}
else
{
printf("\nEnter the First matrix->");
for(i=0;i<m;i++)
for(j=0;j<n;j++)
scanf("%d",&a[i][j]);
printf("\nEnter the Second matrix->");
for(i=0;i<o;i++)
for(j=0;j<p;j++)
scanf("%d",&b[i][j]);
printf("\nThe First matrix is\n");
for(i=0;i<m;i++)
{
printf("\n");
for(j=0;j<n;j++)
{
printf("%d\t",a[i][j]);
}
}
printf("\nThe Second matrix is\n");
for(i=0;i<o;i++)
{
printf("\n");
for(j=0;j<p;j++)
{
printf("%d\t",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("\nThe multiplication of two matrix is\n");
for(i=0;i<m;i++)
{
printf("\n");
for(j=0;j<p;j++)
{
printf("%d\t",c[i][j]);
}
}
getch();
}
Expected Output:
Enter the row and column of first matrix
2
2
Enter the row and column of second matrix
2
2
Enter the First matrix->
4
4
4
4
Enter the Second matrix->
5
5
5
5
The First matrix is
4 4
4 4
The Second matrix is
5 5
5 5
The multiplication of two matrix is
40 40
40 40