#include <stdio.h>

int calcVolume(int w, int l, int h);
int calcSurfaceArea(int w, int l, int h);
int calcSumOfEdges(int w, int l, int h);

/*
 * This program defines a rectangular prism with a fixed width,
 * length, and height, and prints out the prism's volume, surface
 * area, and the sum of its edges.
 */
int main(int argc, char *argv[]) {
	// define dimensions
	int width = 20;
	int length = 30;
	int height = 10;

	printf("Our rectangle has width %d, length %d, and height %d\n", width, length, height);

	int volume = calcVolume(width, length, height);
	int surfaceArea = calcSurfaceArea(width, length, height);
	int sumOfEdges = calcSumOfEdges(width, length, height);

	printf("Volume: %d\n", volume);
	printf("Surface Area: %d\n", surfaceArea);
	printf("Sum of the Edges: %d\n", sumOfEdges);
}

/* Returns the volume of a rectangular prism with width w,
 * length l, and height h */
int calcVolume(int w, int l, int h) {
	return w * l * h;
}

/* Returns the surface area of a rectangular prism with
 * width w, length l, and height h */
int calcSurfaceArea(int w, int l, int h) {
	int surface1 = w * l;
	int surface2 = w * h;
	int surface3 = l * h;
	int sum = surface1 + surface2 + surface3;
	return 2 * sum;
}

/* Returns the sum of the edges of a rectangular
 * prism with width w, length l, and height h */
int calcSumOfEdges(int w, int l, int h) {
	int sum = w + l + h;
	return 4 * sum;
}