程序代码：

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
    int a[3][4] = {
                     { 1,2,3,4},
                     {5,6,7,8},
                     {9,10,11,12},
                     }  ;
   int i,j;
  

   for (i=0;i<3;++i)
      {
           for (j=0;j<4;++j)
          
          printf ("a[%d][%d] = %d  ",i,j,a[i][j]);
  
        printf ("\n");
      }
}

程序代码：

#include "stdio.h"
void main()
{
    int a[3][4] = {
                     { 1,2,3,4},
                     {5,6,7,8},
                     {9,10,11,12},
                     }  ;
   int i,j;
  

   for (i=2;i>=0;i--)
      {
           for (j=3;j>=0;j--)
         
          printf ("a[%d][%d] = %d  ",i,j,a[i][j]);

 
        printf ("\n");
      }
}

程序代码：

#include "stdio.h"
void main()
{
    int a[3][4] = {
                     { 1,2,3,4},
                     {5,6,7,8},
                     {9,10,11,12},
                     }  ;
   int i,j;
   int temp_i = 0;
   int temp_j = 0;
   int temp_a[3][4];

   for(i=2;i>=0;i--)
   {
       for(j=3;j>=0;j--)
           temp_a[temp_i][temp_j++] = a[i][j];
       temp_i++;
       temp_j = 0;
   }

   for (i=0;i<3;i++)
      {
           for (j=0;j<4;j++)
         
          printf ("a[%d][%d] = %d  ",i,j,temp_a[i][j]);

 
        printf ("\n");
      }
}