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int *p;
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int RollNum[30][4];
int (*p)[4]=RollNum;
int *q[5];
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int **p1; // p1 is a pointer to a pointer to an int.
int *&p2; // p2 is a reference to a pointer to an int.
int &*p3; // ERROR: Pointer to a reference is illegal.
int &&p4; // ERROR: Reference to a reference is illegal.&n
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