Anyone see what is wrong with this code?

What's up, :)

I'm writing a program in C to calculate the distance between two latitude/longitude coordinates. the below code is that I wrote. It is not working for some reason and I'm clueless to what is wrong. Maby you can catch something that I'm missing. You have any ideas? Any help would be great. Thanks in advance! :)

Peace

Wise1

Code:

`#include<stdio.h>`

#include<math.h>

#include<conio.h>

main(){

//Declarations

double pi=3.14159265358979,a,c,d,dlat,dlon,lat1,lat2,lon1,lon2;

int days,hours,s,r=3956;

//Header

printf("Origin Coordinates \n 1) 16, 64 \t\t Speed: 20 mph \n 2) 32, 64 (Bermuda) \t Speed: 10 mph \n\nDestination Coordinates \n 1) 26, 80 (Ft. Lauderdale) \n\n\n");

//Read Input

printf("Please Enter the Origin Coordinates: ");

scanf("%f, %f",&lat1,&lon1);

printf("Please Enter the Destination Coordinates: ");

scanf("%f, %f",&lat2,&lon2);

printf("Please Enter the Speed of Travel: ");

scanf("%d",&s);

//Convert Coordinates From Decimal Degrees to Radians

lat1*=pi/180;

lat2*=pi/180;

lon1*=pi/180;

lon2*=pi/180;

//The Haversine Formula

dlat=lat2-lat1;

dlon=lon2-lon1;

a=((sin(dlat/2))*(sin(dlat/2)))+cos(lat1)*cos(lat2)*((sin(dlon/2))*(sin(dlon/2)));

c=2*atan2(sqrt(a),sqrt(1-a));

d=r*c;

//Find Time

hours=d/s;

days=hours/24;

hours-=days*24;

//Print Output

printf("\n\nDistance: %f Statute Miles \nSpeed: %d mph\nTime (Days/Hours): %d/%d",d,s,days,hours);

getch();

}