```/*********************************************
This program reads trial data from a roach
experiment, reads a time from the user, and
tells the user where the roach was going at
that point in time.
**********************************************/
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

/*********************************************
** PROTOTYPES & STRUCT DEFINITIONS
*********************************************/
//--- POINT ---------------------------------//
struct point
{
double x, y;
};
void write(point p, ostream &OUT);

//--- TIME IN HH:MM:SS ----------------------//
struct hhmmss
{
int h,m,s;
};
bool before(hhmmss a, hhmmss b);

//--- A DATA READING FROM THE EXPERIMENT ----//
struct datum
{
point position;
hhmmss time;
};

/*********************************************
** MAIN FUNCTION
*********************************************/
int main()
{
int N;
string s;
ifstream IN("trial.txt");
IN >> N >> s >> s;

datum *A = new datum[N];
for(int i = 0; i < N; i++)

// Get the query time from the user
hhmmss T;
cout << "Enter a time: ";

// Find the first sighting at or after given time
int k = 0;
while (k < N && before(A[k].time,T) )
k++;

// Write result
if (k == 0)
{
cout << "This was before the first sighting at ";
write(A[0].position,cout);
cout << endl;
}
else if (k == N)
{
cout << "This was after the last sighting at ";
write(A[N-1].position,cout);
cout << endl;
}
else
{
cout << "The roach was somewhere between ";
write(A[k-1].position,cout);
cout << " and ";
write(A[k].position,cout);
cout << endl;
}

return 0;
}

/*********************************************
** FUNCTION DEFINITIONS
*********************************************/
{
char c;
IN >> c >> p.x >> c >> p.y >> c;
}

void write(point p, ostream &OUT)
{
OUT << '(' << p.x << ',' << p.y << ')';
}

{
char c;
IN >> c >> T.h >> c >> T.m >> c >> T.s >> c;
}

bool before(hhmmss a, hhmmss b)
{
if (a.h != b.h)
return a.h < b.h; // hours decide
if (a.m != b.m)
return a.m < b.m; // minutes decide
return a.s < b.s;   // down to seconds!
}