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What is displayed when f() is called given the code:
class Number {
public:
string type; 

Number(): type( ¡° void ¡± ) { }
explicit Number(short) : type( ¡° short ¡± ) { } 
Number(int) : type( ¡° int ¡± ) { }
};
void Show(const Number& n) { cout << n.type; }
void f()
{
short s = 42;
Show(s); 
}
a) void
b) short
c) int
d) None of the above

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explicit ÏÞ¶¨µÄ¹¹Ô캯ÊýÓ¦ÏÔʾµ÷ÓÃʱ£º
short k = 50;
Number Nk(k); // ÕâÀïÏÔʾµ÷ÓÃ
Show(Nk); // Êä³öshort

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