就是算这个，算每行公司与事务所的距离，用经纬度

Question

#include <iostream>
#include<string >
#include <vector>
#include <fstream>
#include <sstream>
#include <math.h>
#include<stdlib.h>
#define cit 162
#define kom 493
using namespace std;
 int (*arr)[kom]=new int[cit][kom];
double arr_city[cit][3];
double arr_km[kom][3];

struct city
{
    string city_name;
    double city_lg;
    double  city_lt;
};
struct cityadd
{
    static const int citysize=cit;
    city citydata[cit];
};

struct kongmiao
{
    string km_name;
    double km_lg;
    double  km_lt;
};
struct kongmiaoadd
{
    static const int kmsize=kom;
    kongmiao  kmdata[kom];
};
// 角度转弧度
double rad(double d)
{
    const double PI = 3.1415926535898;
    return d * PI / 180.0;
}

// 传入两个经纬度，计算之间的大致直线距离
int CalcDistance(double fLati1, double fLong1,double fLati2, double fLong2)
{
    const float EARTH_RADIUS = 6378.137;
    double radLat1 = rad(fLati1);
    double radLat2 = rad(fLati2);
    double a = radLat1 - radLat2;
    double b = rad(fLong1) - rad(fLong2);
    double s = 2 * asin(sqrt(pow(sin(a/2),2) + cos(radLat1)*cos(radLat2)*pow(sin(b/2),2)));
    s = s * EARTH_RADIUS;
    s = (int)(s * 1000) ;
    return s;
}
void length(cityadd*citys,kongmiaoadd*kms)
{

    for(int i=0;i<citys->citysize;i++)
    {
        for(int  j=0;j<kms->kmsize;j++)
        {

            arr[i][j]=CalcDistance(citys->citydata[i].city_lt,citys->citydata[i].city_lg,kms->kmdata[j].km_lt,kms->kmdata[j].km_lg);
            //cout<<arr[i][j]<<" "<<endl;
        }

    }
}

void store()    //保存文件
{
    ofstream ofs;

    ofs.open("C:/Users/Administrator/Desktop/out.csv",ios::out);
    if(!ofs.is_open())
    {
        cout<<"文件打开失败！";
        return;
    }
    else
    {
        cout<<"文件打开成功！";
        for(int i=0;i<cit;i++)
        {
            for(int j=0;j<kom;j++)
            {
                ofs<<arr[i][j]<<",";
            }
            ofs<<endl;

        }

    }
    ofs.close();
     cout<<"保存成功"<<endl;
}

void test_01(cityadd*citys)
{
    ifstream inFile("city2.csv", ios::in);
    string lineStr;
    vector<vector<string>> strArray;
    if(inFile.fail())
    { cout<<"false"<<endl;
        return;
    }

    int i,j;
    i=0;
       while (getline(inFile, lineStr))
    {
        j=0;
        // 打印整行字符串
        //cout << lineStr << endl;
        // 存成二维表结构
        stringstream ss(lineStr);
        string str;
        vector<string> lineArray;

        // 按照逗号分隔
        while (getline(ss, str, ','))
        {
            arr_city[i][j]=static_cast<double>(strtod(str.c_str(),NULL));              //string -> float
            j++;

        }
        i++;
           }
    for(int i=0;i<cit;i++)
    {
        citys->citydata[i].city_name=arr_city[i][0];
        citys->citydata[i].city_lg=arr_city[i][1];
        citys->citydata[i].city_lt=arr_city[i][2];
    }
    inFile.close();
}
void test_02(kongmiaoadd*kms)
{
    ifstream inFile("km.csv", ios::in);
    string lineStr;
    vector<vector<string>> strArray;
        int i,j;
    i=0;
    if(inFile.fail())
        cout<<"false2"<<endl;
    while (getline(inFile, lineStr))
    {
        j=0;
        // 打印整行字符串
        //cout << lineStr << endl;
        // 存成二维表结构
        stringstream ss(lineStr);
        string str;
        vector<string> lineArray;
        // 按照逗号分隔
        while (getline(ss, str, ','))
        {
            arr_km[i][j]=static_cast<float>(strtod(str.c_str(),NULL));              //string -> float
            j++;

        }
        i++;
    }
    for(int i=0;i<kom;i++)
    {

        kms->kmdata[i].km_name=arr_km[i][0];
        kms->kmdata[i].km_lg=arr_km[i][1];
        kms->kmdata[i].km_lt=arr_km[i][2];
    }
    inFile.close();
}


int main()
{

     kongmiaoadd *kms=new kongmiaoadd;
    cityadd *citys=new cityadd;

        while(1)
    {
        cout
                <<"*****************************"<<endl
               <<"******1、添加城市经纬度******"<<endl
              <<"******2、添加孔庙经纬度******"<<endl
             <<"******5、计算距离******"<<endl
            <<"******0、退出系统  ******"<<endl
           <<"*****************************"<<endl;
        int key=0;
        cin>>key;
        switch (key) {

        case 1:

            test_01(citys);
            system("pause");
            system("cls");
            break;
        case 2:

            test_02(kms);
            system("pause");
            system("cls");
            break;

        case 5:
            length(citys,kms);
            store();
            system("pause");
            system("cls");
            break;
        case 0:
            cout << "see you" << endl;
            return 0;
            break;
        }
    }
}

怎么跑出公司和事务所之间的距离