My code is working but not for sort places by distance. Some place is not showing in my following need. help me fix it. I need to you not changing any userdifine fuction but only change code in my main function thank you. And the text file is like this

Vancouver International Airport Canada 49.196691 -123.181512 Tucson International Airport USA 32.114510 -110.939227 University of Arizona USA 32.231885 -110.950109 Statue of Liberty USA 40.689249 -74.044500 Big Ben UK 51.500729 -0.124625 Forbidden City China 39.916345 116.397155 Sydney Opera House Australia -33.856784 151.215297 Ministro Pistarini International Airport Argentina -34.815004 -58.534828 Colosseo Italy 41.890210 12.492231 Golden Gate Bridge USA 37.819929 -122.478255 Tucson City Center USA 32.225750 -110.950109

#define _CRT_SECURE_NO_WARNINGS

#include

#include

#include

#include

#define MAX 100

typedef struct place_s

{

char name[100];

char country[30];

double latitude;

double longitude;

double distance;

}place;

double dist(double lat1, double long1, double lat2, double long2)

{

double R = 6371;

double PI = 3.1415926536;

double dx, dy, dz;

double dist_mile;

long1 = long1 - long2;

long1 = long1 * (PI / 180);

lat1 = lat1 * (PI / 180);

lat2 = lat2 * (PI / 180);

dz = sin(lat1) - sin(lat2);

dx = (cos(long1) * cos(lat1)) - cos(lat2);

dy = sin(long1) * cos(lat1);

dist_mile = (asin(sqrt(dx * dx + dy * dy + dz * dz) / 2) * 2 * R) / 1.609344;

return dist_mile;

}

void swap(place *x, place *y)

{

place temp;

temp = *x;

*x = *y;

*y = temp;

}

void selection(place x[], int size)

{

int i, j;

int max;

for (i = 0; i

{

max = i; // start searching currently unsorted

for (j = i; j

{

if (x[j].distance > x[max].distance) // if found a larger element

max = j; // move it to the front

}

swap(&x[i], &x[max]);

}

}

int main()

{ FILE *fp; int i; int iIndex; char temp[100]; double lat1 = 0, long1 = 0; double lat2 = 0, long2 = 0;

place arrplas[MAX];

int iContinue = 1; iIndex = 0; fp = fopen("placelist.txt", "r");

if (fp==NULL)

{

printf("placelist.txt File not found");

return -1;

}

while (iContinue = 1)

{ if (fgets(arrplas[iIndex].name, 100, fp)==NULL)

{

break;

}

//remove newline

arrplas[iIndex].name[strcspn(arrplas[iIndex].name, " ")] = 0;

//read country

if (fgets(arrplas[iIndex].country, 30, fp)==NULL)

{

break;

}

//remove newline

arrplas[iIndex].country[strcspn(arrplas[iIndex].country, " ")] = 0;

//read latitude

memset(temp, 0, sizeof(temp));

if (fgets(temp, 100, fp)==NULL)

{

break;

}

arrplas[iIndex].latitude = atof(temp);

//read longitude

memset(temp, 0, sizeof(temp));

if (fgets(temp, 100, fp)==NULL)

{

break;

}

arrplas[iIndex].longitude = atof(temp);

iIndex++;

}

fclose(fp);

printf(" Places in database NOT in USA: ");

for (i = 0; i

{

if (strcmp("USA", arrplas[i].country)!=0)

{

printf("%s, %s ", arrplas[i].name, arrplas[i].country);

printf("(latitude,longitude) = (%f,%f) ", arrplas[i].latitude, arrplas[i].longitude);

}

}

//find longitud and latitude of TucSon city.

for (i = 0; i

{

if (strcmp("Tucson City Center", arrplas[i].name)!=0)

{

lat1 = arrplas[i].latitude;

long1 = arrplas[i].longitude;

break;

}

}

//find distance from TucSon city.

for (i = 0; i

{

lat2 = arrplas[i].latitude;

long2 = arrplas[i].longitude;

arrplas[i].distance = dist(lat1, long1, lat2, long2);

}

//Display record based on distance from TucSon city.

printf(" Places in database sorted by distance from Tucson city center: ");

selection(arrplas, iIndex);

for (i = 0; i

{

printf("%s, %s ", arrplas[i].name, arrplas[i].country);

printf("(latitude,longitude) = (%f,%f) ", arrplas[i].latitude, arrplas[i].longitude);

printf("Distance is %f miles ", arrplas[i].distance);

}

return 0;

}

Sample Code Execution: Places in Database NOT in USA Vancouver International Airport, Canada (Latitude, Longtitude) = (49.196691,-123.181512) Big Ben, UK (Latitude, Longtitude) = (51.500729,-0.124625) Forbidden City, China (Latitude, Longtitude) = (39.916345, 116.397155) Sydney Opera House, Australia (Latitude, Longtitude) - (-33.856784,151.215297) Ministro Pistarini International Airport, Argentina (Latitude, Longtitude)-(-34.815004,-58.534828) Colosseo, Italy (Latitude, Longtitude) (41.890210, 12.492231) Places in database sorted by distance from Tucson city center (its latitude and longitude are 32.225750 and -110.979413) University of Arizona, USA (Latitude, Longitude) (32.231885, -110.950109) Distance is 1.764 miles Note that the distance is displayed Tucson International Airport, USA (Latitude, Longitude) (32.114510,-110.939227) Distance is 8.037 miles Golden Gate Bridge, USA (Latitude, Longitude) (37.819929, -122.478255) Distance is 755.920 miles Vancouver International Airport, Canada (Latitude, Longitude) - (49.196691,-123.181512) Distance is 1331.545 miles Statue of Liberty, USA (Latitude, Longitude)-(40.689249,-74.044500)