无向无权图的邻接矩阵编程

//参考博客：https://blog.csdn.net/qq_54162207/article/details/117414707

#include <iostream>
using namespace std;

#define Maxsize 100
#define VertexmMaxNum 20
#define ERROR  0
#define OK     1
typedef string VertexType;
typedef int  EdgeType;

typedef struct Graph   //无向图
{
	VertexType vex[VertexmMaxNum];
	EdgeType edge[VertexmMaxNum][VertexmMaxNum];
	int vexnum;     //顶点数
	int edgenum;  //边数
}Graph;

//确定某顶点在G中的位置下标
int locateVex(Graph& G, VertexType v)
{
	for (int i = 0; i < G.vexnum; i++)
	{
		if (v == G.vex[i]) return i;
	}
	return -1;
}

void CreateUG(Graph& G)
{
	int i = 0, j = 0;
	cout << "请输入无向图的顶点数和边数:";
	cin >> G.vexnum >> G.edgenum;
	cout << "请输入顶点:";
	for (i = 0; i < G.vexnum; i++)
	{	
		cin >> G.vex[i];  
	}
	for (i = 0; i < G.vexnum; i++)
	{
		for (j = 0; j < G.vexnum; j++)
			G.edge[i][j] = 0;
	}
	for (int k= 0; k < G.edgenum; k++)
	{
		cout << "请输入第"<<k+1<<"条边：";
		VertexType v1, v2;
		cin >> v1 >> v2;
		int i = locateVex(G, v1);
		int j = locateVex(G, v2);
		G.edge[j][i]=G.edge[i][j] = 1;
	}
}

/*--------打印图的邻接矩阵-----------*/
void PrintfUGraph(Graph G) {
	//将图的邻接矩阵输出在控制台上
	for (int i = 0; i < G.vexnum; i++) {
		cout << "v" << i + 1 << ":";
		for (int j = 0; j < G.vexnum; j++)
			cout << G.edge[i][j] << " ";
		cout << endl;
	}
}

//顶点信息
//v1 v2 v3 v4 v5 v6 v7 v8
//边信息
/*
v1 v2
v1 v3
v2 v4
v2 v5
v3 v6
v3 v7
v4 v8
v5 v8
v6 v7
*/
int main(void)
{
	Graph G;
	CreateUG(G);  //不带权无向图
	PrintfUGraph(G);
	return 0;
}