The output to the Matrix multiplication will be generated as follows:
void main()
{
int m1[10][10],i,j,k,m2[10][10],add[10][10],mult[10][10],r1,c1,r2,c2;
printf("Enter number of rows and columns of first matrix MAX 10\n");
scanf("%d%d",&r1,&c1);
printf("Enter number of rows and columns of second matrix MAX 10\n");
scanf("%d%d",&r2,&c2);
if(r2==c1)
{
printf("Enter rows and columns of First matrix \n");
printf("Row wise\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
scanf("%d",&m1[i][j]);
}
printf("You have entered the first matrix as follows:\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
printf("%d\t",m1[i][j]);
printf("\n");
}
printf("Enter rows and columns of Second matrix \n");
printf("Again row wise\n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
scanf("%d",&m2[i][j]);
}
printf("You have entered the second matrix as follows:\n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
printf("%d\t",m2[i][j]);
printf("\n");
}
if(r1==r2&&c1==c2)
{
printf("Now we add both the above matrix \n");
printf("The result of the addition is as follows;\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
add[i][j]=m1[i][j]+m2[i][j];
printf("%d\t",add[i][j]);
}
printf("\n");
}
}
else
{
printf("Addition cannot be done as rows or columns are not equal\n");
}
printf("Now we multiply both the above matrix \n");
printf("The result of the multiplication is as follows:\n");
/*a11xA11+a12xA21+a13xA31 a11xA12+a12xA22+a13xA32 a11xA13+a12xA23+a13xA33*/
for(i=0;i<r1;i++)
{
for(j=0;j<c2;j++)
{
mult[i][j]=0;
for(k=0;k<r1;k++)
{
mult[i][j]+=m1[i][k]*m2[k][j];
/*mult[0][0]=m1[0][0]*m2[0][0]+m1[0][1]*m2[1][0]+m1[0][2]*m2[2][0];*/
}
printf("%d\t",mult[i][j]);
}
printf("\n");
}
getch();
}
else
{
printf("Matrix multiplication cannot be done");
}
}