Question
What is the output of this program?
1.
#include
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using namespace std;
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class Box
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{
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double width;
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public:
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friend void printWidth( Box box );
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void setWidth( double wid );
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};
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void Box::setWidth( double wid )
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{
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width = wid;
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}
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void printWidth( Box box )
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{
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box.width = box.width * 2;
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cout
Answer: Option D We are using the friend function for printwidth and multiplied the width value by 2, So we got the output as 20
Output:
$ g++ friend.cpp
$ a.out
20
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