Answer Posted / asjad farrukh

void main()
{int *a,*b,*c,row1,col1,row2,col2;
clrscr();
printf("enter rows of 1at matrix");
scanf("%d",&row1);
printf("enter columns of 1at matrix");
scanf("%d",&col1);
printf("enter rows of 2nd matrix");
scanf("%d",&row2);
printf("enter columns of 2nd matrix");
scanf("%d",&col2);
if(col1!=row2)
{
printf("\nsorry\n");
}
else
{
a = (int *) malloc(row1*col1 * 2);
b = (int *) malloc(row2*col2 * 2);
c = (int *) malloc(col1*row2 * 2);

clrscr();
printf("enter 1st matrix \n");
insert(a,row1,col1);
getch();
clrscr();
printf("enter 2st matrix \n");
insert(b,row2,col2);
getch();
clrscr();
printf("1st matrix is\n");
display(a,row1,col1);
printf("\n2nd matrix is\n");
display(b,row2,col2);
prod(a,b,c,row1,col2);
printf("\nafter multiplication \n\n\n");
display(c,row1,col2);
}
getch();
}
insert(int *q,int r,int c)
{int i,j;
for(i=0;i<r;i++)
{
for(j=0;j<c;j++)
{ printf("\nEnter [%d][%d] element-- ",i,j);
scanf("%d",(q+i*c+j));
}
}
}

display(int *q,int r,int c)
{int i,j;
for(i=0;i<r;i++)
{
printf("\n");
for(j=0;j<c;j++)
{
printf("%d\t",*(q+i*c+j));
}
}
}
prod(int *p,int *q,int *z,int r1,int c2)
{int i,j,k;
for(i=0;i<r1;i++)
{
for(j=0;j<c2;j++)
{
*(z+i*c2+j)=0;
for(k=0;k<r1;k++)
{
*(z+i*c2+j)+=*(p+k*2+j)*(*(q+i*c2+k));
}
}

}
}

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