#include <iostream>

using namespace std;

struct box {

	char maker[40];

	float height;

	float width;

	float length;

	float volume;

};

void displayBox(const box b);

void setVolume(box * b);

int main() {

	box b = {"abc", 3, 4, 5, 0};

	setVolume(&b);

	displayBox(b);

	return 0;

}

void displayBox(const box b) {

	cout << "maker: " << b.maker << endl;

	cout << "height: " << b.height << endl;

	cout << "width: " << b.width << endl;

	cout << "length: " << b.length << endl;

	cout << "volume: " << b.volume << endl;

}

void setVolume(box * b) {

	b->volume = b->length*b->width*b->height;

}