Еxample tinclude using namespace std; class Box double length, width, height; public: friend void printWidth (Box box); void setDim (double len, double wid, double hei) length - len; width - wid; height - hei; // Note: printWidth () is not a member function of any class void printWidth (Box box) cout <« "Width of box : " << box.width << endl; // Main function for the program int main() Воx box; // set box dimensions with member function box.setDim (15.0, 10.0, 5): // Use friend function to print the width. printWidth (box); return 0;

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter13: Overloading And Templates
Section: Chapter Questions
Problem 10PE
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Question
Modify the above program to include a friend fuction called printVolume to display volume of the box. Using C++
Example 1
#include <iostream>
using namespace std;
class Box
double length, width, height;
public:
friend void printWidth (Box box);
void setDim (double len, double wid, double hei)
length = len;
width = wid;
height = hei;
} ;
// Note: printWidth () is not a member function of any class.
void printWidth (Box box)
cout << "Width of box : " « box.width << endl;
// Main function for the program
int main ()
Box box;
// set box dimensions with member function
box.setDim (15.0, 10.0, 5);
// Use friend function to print the width.
printWidth (box) ;
return 0;
Transcribed Image Text:Example 1 #include <iostream> using namespace std; class Box double length, width, height; public: friend void printWidth (Box box); void setDim (double len, double wid, double hei) length = len; width = wid; height = hei; } ; // Note: printWidth () is not a member function of any class. void printWidth (Box box) cout << "Width of box : " « box.width << endl; // Main function for the program int main () Box box; // set box dimensions with member function box.setDim (15.0, 10.0, 5); // Use friend function to print the width. printWidth (box) ; return 0;
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