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设有如下定义:  struct sk  { int a;  float b;  }data;  int *p;  若要使p指向data中的a域,正确的赋值语句是

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p=&a;  p=data.a;  p=&data.a;  *p=data.a;  
p=&data.n;  *p=data.n;  p=(struct sk*)&data.n;  p=(struct sk*)data.n:  
p=&data.n; *p=data.n;  p=(struct sk*) &data.n; p=(struct sk*)data.n;  
p=&a;  p=data;  p=&data,  *p=data;  
p=&a;  p=data.a;  p=&data.a;  *p=data.a;  
p=&datn;  *p=datn;  p=(struct sk*)&datn;  p=(struct sk*)datn;  
p=&a;  p=data.a;  p=&data.a;  *p=data.a;  
q=&data.m;  *q=data.m;  q=(struct sk*)&data.m;  q=(struct sk*)data.m;  
p=&a;  p=data.a;  p=&data.a;  *p=data.a;  
p=&data.n;  *p=data.n;  p=(struct sk*)&data.n;  p=(struct sk*)data.n;  
q=&data.m;  *q=data.m;  q=(struct sk*)&data.m;  q=(struct sk*)data.m;  
p=&a;  p=data.a;  p=&data.a,  *p=data.a;  
q=&data.m;  *q=data.m;  q=(struct sk*)&data.m;  q=(struct sk*)data.m;  
p=&a;  p=data.a;  p=&data.a;  *p=data.a;  
p=&a;  p=data.a;  p=&data.a;  *p=data.a;  
P=&data.n;  *P=data.n;  P=(struct sk*)&data.n;  P=(struct sk,)data.n;  
(* p).data  (* p).a  p->data  data. a  
p=&datn;  *p=datn;  p=(struct sk*)&datn;  p=(struct sk*)datn:  

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