location.c:

#include <stdlib.h>

struct location
{
    float latitude;
    float longitude;
};

struct location *new_location()
{
    struct location temp;
    temp.latitude = 0;
    temp.longitude = 0;
   
    return &temp;
}

main(int argc, char **argv)
{
    if (argc < 3)
    {
        printf("Usage: %s longitude latitude\n", argv[0]);
        exit(1);
    }
   
    struct location *a_location = new_location();
    a_location->latitude = atoff(argv[1]);
    a_location->longitude = atoff(argv[2]);
   
    printf("Location: %.2f,%.2f\n", a_location->latitude, a_location->longitude);
}