#include <stdio.h>
#define M 6
#define N 6
void matprint1(double [][N],int,int,char);
void matprint2(double (*)[N],int,int,char);
int main()
{
double a[M][N],*p,*q[4],(*s)[N];
int m,n,i,j;
m=3;           // m actual row dimension
n=4;          //  n actual column dimension
for(i=0;i<m;i++)
  {
    for(j=0;j<n;j++)
    {
      a[i][j]=(i+j+2)*(i+j+2);
    }
  }
matprint1(a,m,n,'A');
printf("\n--------------\n");
printf("%p  %p  %p  %p\n",a,a[0],a+1,a[0]+N);
printf("%0.2lf  %0.2lf  %0.2lf  %0.2lf\n",**a,*a[0],**(a+1),*(a[0]+N));
q[0]=a[1];
q[1]=a[0];
printf("%0.2lf  %0.2lf  %0.2lf  %0.2lf\n",q[0][2],q[1][2],q[0][8],q[1][8]);
p=&a[1][2];
printf("%0.2lf  %0.2lf\n",p[1],p[-7]);
printf("%0.2lf  %0.2lf  %0.2lf\n",*(a[1]+2),a[1][2],*(*a+N*1+2));
printf("%0.2lf  %0.2lf  %0.2lf\n",*(&a[1][0]+2),(*(a+1))[2],*(&a[0][0]+N*1+2));
s=&a[1];
printf("%0.2lf  %0.2lf\n",s[0][2],s[1][2]);
printf("--------------\n");
matprint2(a,m,n,'A');
return 0;
}
void matprint1(double a[][N],int m,int n,char name)
{
int i,j;
printf("The matrix %c is:\n",name);
for(i=0;i<m;i++)
  {
	for(j=0;j<n;j++)
	{
		printf("%0.2lf  ",a[i][j]);
	}
	printf("\n");
  }
}

void matprint2(double (*a)[N],int m,int n,char name)
{
int i,j;
printf("The matrix %c is:\n",name);
for(i=0;i<m;i++)
  {
	for(j=0;j<n;j++)
	{
		printf("%0.2lf  ",a[i][j]);
	}
	printf("\n");
  }
}