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  1. #include<stdio.h>
  2.  
  3.  
  4. int c_array(int **a,int row,int column,int i,int j)
  5. {
  6.     printf("%d ",*(*( a + i) +j) );//使用pointer來控制矩陣
  7. }
  8.  
  9.  
  10. int main(void)
  11. {
  12.     int **ptr=NULL;
  13.     int row,column;
  14.     int i,j;
  15.  
  16.     //while(1)
  17.     {
  18.  
  19. 		row=5;
  20. 		column=5;
  21.  
  22.        ptr=(int**)malloc(sizeof(int*)*row);
  23.        //生成一維指標陣列
  24.        for(i=0;i<row;i++)
  25.        {
  26.            ptr[i]=(int*)malloc(sizeof(int)*column);
  27.        }//二維
  28.  
  29.        for(i=0;i<row;i++)
  30.        {
  31.            for(j=0;j<column;j++)
  32.            {
  33.                ptr[i][j]=1;
  34.            }
  35.        }//將矩陣付值:1
  36.  
  37.        for(i=0;i<row;i++)
  38.        {
  39.            for(j=0;j<column;j++)
  40.            {
  41.                //printf("%d",ptr[i][j]);//測試用
  42.                c_array((int*)ptr,row,column,i,j);//使用另外函數來print
  43.            }
  44.  
  45.            printf("\n");//換行
  46.        }
  47.  
  48.        for(i=0;i<row;i++) free(ptr[i]);
  49.        free(ptr);//釋放記憶體
  50.  
  51.     }
  52.     return 0;
  53. }
  54.  
Success #stdin #stdout 0s 2140KB
comments (?)
stdin
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Standard input is empty
stdout
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1 1 1 1 1 
1 1 1 1 1 
1 1 1 1 1 
1 1 1 1 1 
1 1 1 1 1
https://ideone.com/Wv0xti
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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