prob

 void calc_probability(int num)
 {
     int i = , j =  , k = ;
     #define  SIZE_NUM 8
     int *array_num = NULL;
     int *remember_num = NULL;
     char (**array_detail)[SIZE_NUM] = NULL; //数组指针
     int len_array = ;
     int count_num = ;
     int count = ;

     len_array =  * num - ;
     array_num = (int*)calloc(len_array, sizeof(int));
     array_detail = (char (**)[SIZE_NUM])calloc(len_array, sizeof(char(*))); //这里注意是sizeof(char(*)不是sizeof(char(*)[SIZE_NUM])
     remember_num = (int*)calloc(len_array, sizeof(int));

     for(i = ; i < len_array; i++)
     {
         array_num[i] = i + ;
         array_detail[i] = (char(*)[SIZE_NUM])calloc(count_num + , sizeof(char[SIZE_NUM]));
     }

     for(i = ; i < len_array; i++)
     {
         count = ; // 计数清零
         count_num = ;
         for(j = ; j <= num; j++)
         {
             for(k = ; k <= num; k++)
             {
                 if(j + k == array_num[i])
                 {
                     sprintf(array_detail[i] + count_num, "(%d, %d)", j, k);
                     //printf("%s", array_detail[i] + count_num);
                     count_num++;
                     count++;
                     array_detail[i]  = (char(*)[SIZE_NUM])realloc(array_detail[i], (count_num + ) * sizeof(char[SIZE_NUM]));
                     memset(array_detail[i] + count_num, 0x0, SIZE_NUM);
                 }
             }
         }
         remember_num[i] = count;
     }

     for(i = ; i < len_array; i ++)
     {
         printf("数字 %d 的个数是: %d\n", i + , remember_num[i]);
         for(j = ; j < remember_num[i]; j++)
         {
             printf("%s ", array_detail[i] + j);
         }
         printf("\n");
     }

     //释放内存
     free(remember_num);
     remember_num = NULL;

     free(array_num);
     array_num = NULL;

     for(i = ; i < len_array; i++)
     {
         free(array_detail[i]);
         array_detail[i] = NULL;
     }
     free(array_detail);
     array_detail = NULL;

     return;

 }

错了好多次，终于改对了。