数据结构地图着色问题求解

Question

#include <stdio.h>
#include <stdlib.h>
typedef struct ArcNode{
    int x;         // 表示与当前顶点所表示省份相邻的省份的位置信息
    struct ArcNode *next;
}ArcNode;       // 表示省份之间相邻关系的弧结点
typedef struct{
    char *name;   // 顶点所表示的省份的名称
    int color;
    ArcNode *firstnext;  // 指向第一个弧
}Province[35];
int main()
{
    Province province;
    int i,j;
    ArcNode
*p,*hu1,*hu2,*hu3,*hu4,*hu5,*hu6,*hu7,*hu8,*hu9,*hu10,*hu11,*hu12,*hu13,*hu14,*hu15,*hu16,*hu17,*hu18;
    ArcNode *hu19,*hu20,*hu21,*hu22,*hu23,*hu24,*hu25,*hu26,*hu27,*hu28,*hu29,*hu30,*hu31,*hu32,*hu33,*hu34,*hu35;
    ArcNode *hu36,*hu37,*hu38,*hu39,*hu40,*hu41,*hu42,*hu43,*hu44,*hu45,*hu46,*hu47,*hu48,*hu49,*hu50,*hu51,*hu52;
    ArcNode *hu53,*hu54,*hu55,*hu56,*hu57,*hu58,*hu59,*hu60,*hu61,*hu62,*hu63,*hu64,*hu65,*hu66;
    ArcNode *hu67,*hu68,*hu69,*hu70,*hu71,*hu72,*hu73,*hu74,*hu75,*hu76,*hu77,*hu78,*hu79,*hu80,*hu81,*hu82,*hu83,*hu84;
    ArcNode *hu85,*hu86,*hu87,*hu88,*hu89,*hu90,*hu91,*hu92,*hu93,*hu94,*hu95,*hu96,*hu97,*hu98,*hu99,*hu100;
    ArcNode *hu101,*hu102,*hu103,*hu104,*hu105,*hu106,*hu107,*hu108,*hu109,*hu110,*hu111,*hu112,*hu113,*hu114,*hu115,*hu116,*hu117;
    ArcNode *hu118,*hu119,*hu120,*hu121,*hu122,*hu123,*hu124,*hu125,*hu126,*hu127,*hu128,*hu129;
    ArcNode *hu130,*hu131,*hu132,*hu133,*hu134,*hu135,*hu136,*hu137,*hu138,*hu139,*hu140,*hu141,*hu142,*hu143,*hu144;//声明表示省份顶点的信息
    hu1=(ArcNode *)malloc(sizeof(ArcNode));
    hu2=(ArcNode *)malloc(sizeof(ArcNode));
    hu3=(ArcNode *)malloc(sizeof(ArcNode));
    hu4=(ArcNode *)malloc(sizeof(ArcNode));
    hu5=(ArcNode *)malloc(sizeof(ArcNode));
    hu6=(ArcNode *)malloc(sizeof(ArcNode));
    hu7=(ArcNode *)malloc(sizeof(ArcNode));
    hu8=(ArcNode *)malloc(sizeof(ArcNode));
    hu9=(ArcNode *)malloc(sizeof(ArcNode));
    hu10=(ArcNode *)malloc(sizeof(ArcNode));
    hu11=(ArcNode *)malloc(sizeof(ArcNode));
    hu12=(ArcNode *)malloc(sizeof(ArcNode));
    hu13=(ArcNode *)malloc(sizeof(ArcNode));
    hu14=(ArcNode *)malloc(sizeof(ArcNode));
    hu15=(ArcNode *)malloc(sizeof(ArcNode));
    hu16=(ArcNode *)malloc(sizeof(ArcNode));
    hu17=(ArcNode *)malloc(sizeof(ArcNode));
    hu18=(ArcNode *)malloc(sizeof(ArcNode));
    hu19=(ArcNode *)malloc(sizeof(ArcNode));
    hu20=(ArcNode *)malloc(sizeof(ArcNode));
    hu21=(ArcNode *)malloc(sizeof(ArcNode));
    hu22=(ArcNode *)malloc(sizeof(ArcNode));
    hu23=(ArcNode *)malloc(sizeof(ArcNode));
    hu24=(ArcNode *)malloc(sizeof(ArcNode));
    hu25=(ArcNode *)malloc(sizeof(ArcNode));
    hu26=(ArcNode *)malloc(sizeof(ArcNode));
    hu27=(ArcNode *)malloc(sizeof(ArcNode));
    hu28=(ArcNode *)malloc(sizeof(ArcNode));
    hu29=(ArcNode *)malloc(sizeof(ArcNode));
    hu30=(ArcNode *)malloc(sizeof(ArcNode));
    hu31=(ArcNode *)malloc(sizeof(ArcNode));
    hu32=(ArcNode *)malloc(sizeof(ArcNode));
    hu33=(ArcNode *)malloc(sizeof(ArcNode));
    hu34=(ArcNode *)malloc(sizeof(ArcNode));
    hu35=(ArcNode *)malloc(sizeof(ArcNode));
    hu36=(ArcNode *)malloc(sizeof(ArcNode));
    hu37=(ArcNode *)malloc(sizeof(ArcNode));
    hu38=(ArcNode *)malloc(sizeof(ArcNode));
    hu39=(ArcNode *)malloc(sizeof(ArcNode));
    hu40=(ArcNode *)malloc(sizeof(ArcNode));
    hu41=(ArcNode *)malloc(sizeof(ArcNode));
    hu42=(ArcNode *)malloc(sizeof(ArcNode));
    hu43=(ArcNode *)malloc(sizeof(ArcNode));
    hu44=(ArcNode *)malloc(sizeof(ArcNode));
    hu45=(ArcNode *)malloc(sizeof(ArcNode));
    hu46=(ArcNode *)malloc(sizeof(ArcNode));
    hu47=(ArcNode *)malloc(sizeof(ArcNode));
    hu48=(ArcNode *)malloc(sizeof(ArcNode));
    hu49=(ArcNode *)malloc(sizeof(ArcNode));
    hu50=(ArcNode *)malloc(sizeof(ArcNode));
    hu51=(ArcNode *)malloc(sizeof(ArcNode));
    hu52=(ArcNode *)malloc(sizeof(ArcNode));
    hu53=(ArcNode *)malloc(sizeof(ArcNode));
    hu54=(ArcNode *)malloc(sizeof(ArcNode));
    hu55=(ArcNode *)malloc(sizeof(ArcNode));
    hu56=(ArcNode *)malloc(sizeof(ArcNode));
    hu57=(ArcNode *)malloc(sizeof(ArcNode));
    hu58=(ArcNode *)malloc(sizeof(ArcNode));
    hu59=(ArcNode *)malloc(sizeof(ArcNode));
    hu60=(ArcNode *)malloc(sizeof(ArcNode));
    hu61=(ArcNode *)malloc(sizeof(ArcNode));
    hu62=(ArcNode *)malloc(sizeof(ArcNode));
    hu63=(ArcNode *)malloc(sizeof(ArcNode));
    hu64=(ArcNode *)malloc(sizeof(ArcNode));
    hu65=(ArcNode *)malloc(sizeof(ArcNode));
    hu66=(ArcNode *)malloc(sizeof(ArcNode));
    hu67=(ArcNode *)malloc(sizeof(ArcNode));
    hu68=(ArcNode *)malloc(sizeof(ArcNode));
    hu69=(ArcNode *)malloc(sizeof(ArcNode));
    hu70=(ArcNode *)malloc(sizeof(ArcNode));
    hu71=(ArcNode *)malloc(sizeof(ArcNode));
    hu72=(ArcNode *)malloc(sizeof(ArcNode));
    hu73=(ArcNode *)malloc(sizeof(ArcNode));
    hu74=(ArcNode *)malloc(sizeof(ArcNode));
    hu75=(ArcNode *)malloc(sizeof(ArcNode));
    hu76=(ArcNode *)malloc(sizeof(ArcNode));
    hu77=(ArcNode *)malloc(sizeof(ArcNode));
    hu78=(ArcNode *)malloc(sizeof(ArcNode));
    hu79=(ArcNode *)malloc(sizeof(ArcNode));
    hu80=(ArcNode *)malloc(sizeof(ArcNode));
    hu81=(ArcNode *)malloc(sizeof(ArcNode));
    hu82=(ArcNode *)malloc(sizeof(ArcNode));
    hu83=(ArcNode *)malloc(sizeof(ArcNode));
    hu84=(ArcNode *)malloc(sizeof(ArcNode));
    hu85=(ArcNode *)malloc(sizeof(ArcNode));
    hu86=(ArcNode *)malloc(sizeof(ArcNode));
    hu87=(ArcNode *)malloc(sizeof(ArcNode));
    hu88=(ArcNode *)malloc(sizeof(ArcNode));
    hu89=(ArcNode *)malloc(sizeof(ArcNode));
    hu90=(ArcNode *)malloc(sizeof(ArcNode));
    hu91=(ArcNode *)malloc(sizeof(ArcNode));
    hu92=(ArcNode *)malloc(sizeof(ArcNode));
    hu93=(ArcNode *)malloc(sizeof(ArcNode));
    hu94=(ArcNode *)malloc(sizeof(ArcNode));
    hu95=(ArcNode *)malloc(sizeof(ArcNode));
    hu96=(ArcNode *)malloc(sizeof(ArcNode));
    hu97=(ArcNode *)malloc(sizeof(ArcNode));
    hu98=(ArcNode *)malloc(sizeof(ArcNode));
    hu99=(ArcNode *)malloc(sizeof(ArcNode));
    hu100=(ArcNode *)malloc(sizeof(ArcNode));
    hu101=(ArcNode *)malloc(sizeof(ArcNode));
    hu102=(ArcNode *)malloc(sizeof(ArcNode));
    hu103=(ArcNode *)malloc(sizeof(ArcNode));
    hu104=(ArcNode *)malloc(sizeof(ArcNode));
    hu105=(ArcNode *)malloc(sizeof(ArcNode));
    hu106=(ArcNode *)malloc(sizeof(ArcNode));
    hu107=(ArcNode *)malloc(sizeof(ArcNode));
    hu108=(ArcNode *)malloc(sizeof(ArcNode));
    hu109=(ArcNode *)malloc(sizeof(ArcNode));
    hu110=(ArcNode *)malloc(sizeof(ArcNode));
    hu111=(ArcNode *)malloc(sizeof(ArcNode));
    hu112=(ArcNode *)malloc(sizeof(ArcNode));
    hu113=(ArcNode *)malloc(sizeof(ArcNode));
    hu114=(ArcNode *)malloc(sizeof(ArcNode));
    hu115=(ArcNode *)malloc(sizeof(ArcNode));
    hu116=(ArcNode *)malloc(sizeof(ArcNode));
    hu117=(ArcNode *)malloc(sizeof(ArcNode));
    hu118=(ArcNode *)malloc(sizeof(ArcNode));
    hu119=(ArcNode *)malloc(sizeof(ArcNode));
    hu120=(ArcNode *)malloc(sizeof(ArcNode));
    hu121=(ArcNode *)malloc(sizeof(ArcNode));
    hu122=(ArcNode *)malloc(sizeof(ArcNode));
    hu123=(ArcNode *)malloc(sizeof(ArcNode));
    hu124=(ArcNode *)malloc(sizeof(ArcNode));
    hu125=(ArcNode *)malloc(sizeof(ArcNode));
    hu126=(ArcNode *)malloc(sizeof(ArcNode));
    hu127=(ArcNode *)malloc(sizeof(ArcNode));
    hu128=(ArcNode *)malloc(sizeof(ArcNode));
    hu129=(ArcNode *)malloc(sizeof(ArcNode));
    hu130=(ArcNode *)malloc(sizeof(ArcNode));
    hu131=(ArcNode *)malloc(sizeof(ArcNode));
    hu132=(ArcNode *)malloc(sizeof(ArcNode));
    hu133=(ArcNode *)malloc(sizeof(ArcNode));
    hu134=(ArcNode *)malloc(sizeof(ArcNode));
    hu135=(ArcNode *)malloc(sizeof(ArcNode));
    hu136=(ArcNode *)malloc(sizeof(ArcNode));
    hu137=(ArcNode *)malloc(sizeof(ArcNode));
    hu138=(ArcNode *)malloc(sizeof(ArcNode));
    hu139=(ArcNode *)malloc(sizeof(ArcNode));
    hu140=(ArcNode *)malloc(sizeof(ArcNode));
    hu141=(ArcNode *)malloc(sizeof(ArcNode));
    hu142=(ArcNode *)malloc(sizeof(ArcNode));
    hu143=(ArcNode *)malloc(sizeof(ArcNode));
    hu144=(ArcNode *)malloc(sizeof(ArcNode));
    province[1].name="黑龙江";
    hu1->x=2;
    hu2->x=4;
    province[1].firstnext=hu1;//声名表示省份之间相邻的弧
    hu1->next=hu2;
    hu2->next=NULL;
    province[2].name="吉林";
    hu3->x=4;
    hu4->x=3;
    hu141->x=1;
    province[2].firstnext=hu3;
    hu3->next=hu4;
    hu4->next=hu141;
    hu141->next=NULL;
    province[3].name="辽宁";
    hu5->x=4;
    hu6->x=10;
    hu142->x=2;
    province[3].firstnext=hu5;
    hu5->next=hu6;
    hu6->next=hu142;
    hu142->next=NULL;
    province[4].name="内蒙古";
    hu7->x=1;
    hu8->x=2;
    hu9->x=3;
    hu10->x=10;
    hu11->x=9;
    hu12->x=8;
    hu13->x=7;
    hu14->x=6;
    hu15->x=5;
    province[4].firstnext=hu7;
    hu7->next=hu8;
    hu8->next=hu9;
    hu9->next=hu10;
    hu10->next=hu11;
    hu11->next=hu12;
    hu12->next=hu13;
    hu13->next=hu14;
    hu14->next=hu15;
    hu15->next=NULL;
    province[5].name="新疆";
    hu16->x=6;
    hu17->x=13;
    hu18->x=16;
    province[5].firstnext=hu16;
    hu16->next=hu17;
    hu17->next=hu18;
    hu18->next=NULL;
    province[6].name="甘肃";
    hu19->x=4;
    hu20->x=7;
    hu21->x=8;
    hu22->x=17;
    hu23->x=13;
    hu24->x=5;
    province[6].firstnext=hu19;
    hu19->next=hu20;
    hu20->next=hu21;
    hu21->next=hu22;
    hu22->next=hu23;
    hu23->next=hu24;
    hu24->next=NULL;
    province[7].name="宁夏";
    hu25->x=4;
    hu26->x=8;
    hu27->x=6;
    province[7].firstnext=hu25;
    hu25->next=hu26;
    hu26->next=hu27;
    hu27->next=NULL;
    province[8].name="陕西";
    hu28->x=4;
    hu29->x=9;
    hu30->x=14;
    hu31->x=19;
    hu32->x=18;
    hu33->x=17;
    hu34->x=6;
    hu35->x=7;
    province[8].firstnext=hu28;
    hu28->next=hu29;
    hu29->next=hu30;
    hu30->next=hu31;
    hu31->next=hu32;
    hu32->next=hu33;
    hu33->next=hu34;
    hu34->next=hu35;
    hu35->next=NULL;
    province[9].name="山西";
    hu36->x=4;
    hu37->x=10;
    hu38->x=14;
    hu39->x=8;
    province[9].firstnext=hu36;
    hu36->next=hu37;
    hu37->next=hu38;
    hu38->next=hu39;
    hu39->next=NULL;
    province[10].name="河北";
    hu40->x=4;
    hu41->x=3;
    hu42->x=11;
    hu43->x=12;
    hu44->x=15;
    hu45->x=14;
    hu46->x=9;
    province[10].firstnext=hu40;
    hu40->next=hu41;
    hu41->next=hu42;
    hu42->next=hu43;
    hu43->next=hu44;
    hu44->next=hu45;
    hu45->next=hu46;
    hu46->next=NULL;
    province[11].name="北京";
    hu47->x=10;
    hu48->x=12;
    province[11].firstnext=hu47;
    hu47->next=hu48;
    hu48->next=NULL;
    province[12].name="天津";
    hu49->x=10;
    hu50->x=11;
    province[12].firstnext=hu49;
    hu49->next=hu50;
    hu50->next=NULL;
    province[13].name="青海";
    hu51->x=5;
    hu52->x=6;
    hu53->x=17;
    hu54->x=16;
    province[13].firstnext=hu51;
    hu51->next=hu52;
    hu52->next=hu53;
    hu53->next=hu54;
    hu54->next=NULL;
    province[14].name="河南";
    hu55->x=9;
    hu56->x=10;
    hu57->x=15;
    hu58->x=21;
    hu59->x=20;
    hu60->x=19;
    hu61->x=8;
    province[14].firstnext=hu55;
    hu55->next=hu56;
    hu56->next=hu57;
    hu57->next=hu58;
    hu58->next=hu59;
    hu59->next=hu60;
    hu60->next=hu61;
    hu61->next=NULL;
    province[15].name="山东";
    hu62->x=10;
    hu63->x=14;
    hu64->x=21;
    province[15].firstnext=hu62;
    hu62->next=hu63;
    hu63->next=hu64;
    hu64->next=NULL;
    province[16].name="西藏";
    hu65->x=5;
    hu66->x=13;
    hu67->x=17;
    hu68->x=23;
    province[16].firstnext=hu65;
    hu65->next=hu66;
    hu66->next=hu67;
    hu67->next=hu68;
    hu68->next=NULL;
    province[17].name="四川";
    hu69->x=13;
    hu70->x=6;
    hu71->x=8;
    hu72->x=18;
    hu73->x=24;
    hu74->x=23;
    hu75->x=16;
    province[17].firstnext=hu69;
    hu69->next=hu70;
    hu70->next=hu71;
    hu71->next=hu72;
    hu72->next=hu73;
    hu73->next=hu74;
    hu74->next=hu75;
    hu75->next=NULL;
    province[18].name="重庆";
    hu76->x=17;
    hu77->x=8;
    hu78->x=19;
    hu79->x=25;
    hu80->x=24;
    province[18].firstnext=hu76;
    hu76->next=hu77;
    hu77->next=hu78;
    hu78->next=hu79;
    hu79->next=hu80;
    hu80->next=NULL;
    province[19].name="湖北";
    hu81->x=8;
    hu82->x=14;
    hu83->x=20;
    hu84->x=26;
    hu85->x=25;
    hu86->x=18;
    province[19].firstnext=hu81;
    hu81->next=hu82;
    hu82->next=hu83;
    hu83->next=hu84;
    hu84->next=hu85;
    hu85->next=hu86;
    hu86->next=NULL;
    province[20].name="安徽";
    hu87->x=14;
    hu88->x=21;
    hu89->x=27;
    hu90->x=26;
    hu91->x=19;
    province[20].firstnext=hu87;
    hu87->next=hu88;
    hu88->next=hu89;
    hu89->next=hu90;
    hu90->next=hu91;
    hu91->next=NULL;
    province[21].name="江苏";
    hu92->x=15;
    hu93->x=14;
    hu94->x=20;
    hu95->x=27;
    hu96->x=22;
    province[21].firstnext=hu92;
    hu92->next=hu93;
    hu93->next=hu94;
    hu94->next=hu95;
    hu95->next=hu96;
    hu96->next=NULL;
    province[22].name="上海";
    hu97->x=21;
    hu98->x=27;
    province[22].firstnext=hu97;
    hu97->next=hu98;
    hu98->next=NULL;
    province[23].name="云南";
    hu99->x=16;
    hu100->x=17;
    hu101->x=24;
    hu102->x=29;
    province[23].firstnext=hu99;
    hu99->next=hu100;
    hu100->next=hu101;
    hu101->next=hu102;
    hu102->next=NULL;
    province[24].name="贵州";
    hu103->x=17;
    hu104->x=24;
    hu105->x=29;
    hu106->x=23;
    hu107->x=18;
    province[24].firstnext=hu103;
    hu103->next=hu104;
    hu104->next=hu105;
    hu105->next=hu106;
    hu106->next=hu107;
    hu107->next=NULL;
    province[25].name="湖南";
    hu108->x=18;
    hu109->x=19;
    hu110->x=26;
    hu111->x=30;
    hu112->x=29;
    hu113->x=24;
    province[25].firstnext=hu108;
    hu108->next=hu109;
    hu109->next=hu110;
    hu110->next=hu111;
    hu111->next=hu112;
    hu112->next=hu113;
    hu113->next=NULL;
    province[26].name="江西";
    hu114->x=25;
    hu115->x=19;
    hu116->x=20;
    hu117->x=27;
    hu118->x=28;
    hu119->x=30;
    province[26].firstnext=hu114;
    hu114->next=hu115;
    hu115->next=hu116;
    hu116->next=hu117;
    hu117->next=hu118;
    hu118->next=hu119;
    hu119->next=NULL;
    province[27].name="浙江";
    hu120->x=22;
    hu121->x=21;
    hu122->x=20;
    hu123->x=26;
    hu124->x=28;
    province[27].firstnext=hu120;
    hu120->next=hu121;
    hu121->next=hu122;
    hu122->next=hu123;
    hu123->next=hu124;
    hu124->next=NULL;
    province[28].name="福建";
    hu125->x=27;
    hu126->x=26;
    hu127->x=30;
    province[28].firstnext=hu125;
    hu125->next=hu126;
    hu126->next=hu127;
    hu127->next=NULL;
    province[29].name="广西";
    hu128->x=23;
    hu129->x=24;
    hu130->x=25;
    hu131->x=30;
    province[29].firstnext=hu128;
    hu128->next=hu129;
    hu129->next=hu130;
    hu130->next=hu131;
    hu131->next=NULL;
    province[30].name="广东";
    hu132->x=29;
    hu133->x=25;
    hu134->x=26;
    hu135->x=28;
    hu136->x=31;
    hu137->x=32;
    hu138->x=34;
    province[30].firstnext=hu132;
    hu132->next=hu133;
    hu133->next=hu134;
    hu134->next=hu135;
    hu135->next=hu136;
    hu136->next=hu137;
    hu137->next=hu138;
    hu138->next=NULL;
    province[31].name="澳门";
    hu139->x=30;
    province[31].firstnext=hu139;
    hu139->next=NULL;
    province[32].name="香港";
    hu140->x=30;
    province[32].firstnext=hu140;
    hu140->next=NULL;
    province[33].name="台湾";
    hu141->x=28;
    province[33].firstnext=hu141;
    hu141->next=NULL;
    province[34].name="海南";
    hu142->x=30;
    province[34].firstnext=hu142;
    hu142->next=NULL;
    for(i=1;i<=34;i++)
    {
        province[i].color=0;
    }
    for(i=1;i<=34;i++)
    {
        j=1;
        p=province[i].firstnext;
        while(p!=NULL)
        {
            p=province[i].firstnext;
            while(p!=NULL&&j!=province[p->x].color)
            {
                p=p->next;
            }
            if(p!=NULL)
                j++;
        }
        province[i].color=j;
    }//分别为各省份着色
    //输出各城市颜色信息
    printf("着色结果为:\n");
    for(i=1;i<=34;i++)
    {
        printf("%s:",province[i].name);
        if(province[i].color==0)                 
        printf("%d  白色\n",province[i].color);                
        else if(province[i].color==1)             
        printf("%d  蓝色\n",province[i].color);                
        else if(province[i].color==2) 
        printf("%d  红色\n",province[i].color);                
        else if(province[i].color==3) 
        printf("%d  绿色\n",province[i].color);        
        else if(province[i].color==4) 
        printf("%d  黄色\n",province[i].color);                
        else
        printf("  无色"); 
    }//输出各省份颜色信息
    return 0;
    }

这是地图着色问题的代码为什么结果会出错啊，求解答！

Answer 1

• 这个问题的回答你可以参考下: https://ask.csdn.net/questions/7590722
• 这篇博客你也可以参考下：通过函数名调用函数和通过函数指针调用函数有什么区别呢？为什么调用函数指针没有直接调用函数效率高？
• 除此之外, 这篇博客: 【重要！】一文理解指针作为函数参数传递！看完不懂你打我中的 通过一段简单的代码理解指针作为参数传递（指针实参和形参） 部分也许能够解决你的问题, 你可以仔细阅读以下内容或跳转源博客中阅读:
  

• #include <bits/stdc++.h>
  using namespace std;
  
  void test(int *b)
  {
  
  cout << "形参指针地址：" << &b << endl;
  cout << "形参指向内容：" << *b << endl;
  cout << "实参和形参指向同一地址,但实参指针变量和形参指针变量自身地址不一致，可以看出传参方式为值传递而并非引用传递" << endl;
  cout << endl;
  cout << "==更改后==" << endl;
  int num2 = 2;
  b = &num2;
  cout << "型参指向内容：" << *b << endl;
  }
  
  int main()
  {
  int num = 1;
  int *a = &num;
  
  cout << "==更改前==" << endl;
  
  cout << "实参指针地址：" << &a << endl;
  cout << "实参指向内容：" << *a << endl;
  test(a);
  
  cout << "实参指向内容：" << *a << endl;
  
  return 0;
  }

  运行结果：

  ==更改前==
  实参和形参指向同一地址,但实参指针变量和形参指针变量自身地址不一致，可以看出为值传参而并非引用传参
  实参指针地址：0x61fe10
  形参指针地址：0x61fdf0
  ==更改后==
  型参指向内容：2
  实参指向内容：1

  简而言之：指针a和指针b在一开始指向同一变量，但指针a和指针b自身所在的地址不同。

  在test函数中，指针b指向了其他的变量，所以修改内容没有同步到指针a指向的变量

  即test函数参数传递为值传递

  如果想要更加详细的理解，参考博客：很好的指针传参理解博客

• 您还可以看一下 吴刚老师的【吴刚大讲堂】电商导航视觉识别设计课程中的 应用导航标签的视觉化落地小节, 巩固相关知识点