/* ======================================== */
/*    程式實例: 2_6_2a.c                    */
/*    計算出一星期的課程總數(shù).(指標陣列)     */
/* ======================================== */

void main()
{
   int pointer[6] = { 0, 10, 5, 25, 15, 20 };

   int data[30] = { 0, 2, 0, 2, 0,     /* 課程定義         */
                    5, 0, 5, 0, 5,
                    1, 4, 1, 4, 1,
                    3, 0, 3, 0, 3,
                    0, 0, 0, 0, 0,
                    0, 0, 0, 0, 0 };
   int sum;                            /* 課程總數(shù)         */
   int i,j;

   sum = 0;                            /* 設(shè)定課程總數(shù)初值 */
   for ( i = 0; i < 6; i++ )           /* 陣列的走訪       */
      for ( j = 0; j < 5; j++ )
         if ( data[pointer[i]+j] != 0 )  /* 檢查有沒有課   */
            sum++;
   printf("課程總數(shù): %d\n",sum);       /* 印出課程總數(shù)     */
}