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1)pl=&a[0],b=*pl++;
b = *pl,pl++;即b = 100, pl = &a[1]
2)pl=&a[0],b=*++pl;
pl++, b = *pl;即b = 200, pl = &a[1]
3)pl=&a[0],b=(*pl)++;
b = *pl,(*pl)++;即b = 100, *pl = 101
4)*(pl++);
*pl, pl++;
5)pl=&a[1],b=++*pl;
(*pl)++, b = *pl;即b = 201, pl = &a[1]