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#ifndef GRAPH_HEADER_H#define GRAPH_HEADER_H//graph_header.h by Cal Zabel for CS163 Program 5#include <iostream>#include <string>using namespace std;struct vertex{	//constructor to initialize variables	vertex();	//name of the class	string className;	bool visit;	bool used;	//pointer to the attached node list	node * head;};//edge list is made of these nodesstruct node {	//which vertex is it connected to	vertex * connected;	//next spot in the list	node * next;};#endif