Examples

Summing an array

      float x[5];
      double sum = 0.0;
      int i;
      /* Some code that fills array x. */
      for ( i = 0; i < 5; i++ )
      { sum += x[i];
      }

• we initialize sum with the declaration

• we use i++ to indicate increment

• we use sum += to indicate accumulation

Summing an array with pointer

      float x[5];
      float *y = x;
      double sum = 0.0;
      int i;
      /* Some code that fills array x. */
      for ( i = 0; i < 5; i++ )
      { sum += *y++;
      }