Assignment 2 Question5

Hi, In assignment 2 Q5 they give a example of what the race record and race limit for a race can look like in seconds. The example quotes the numbers 101654 and 97200. If this is in seconds like stated that equates too 28:14:14 and 27:00:00. These examples seem to be outside the maximum range that we will ever have giving start and end hh:mm:ss. surely a record or limit should always be less than 24:00:00 as we do not specify start and end dates and we need too enforce times in the range of 00:00:00 and 23:59:59?

I just divided them by 10. I think they made a mistake but I did not see any corrections posted anywhere.

Devesh

One more question regarding Question5.

In question 5 it is stated that "You may assume that the detail for a specific distance is separated by a blank from the detail for the following distance."

Would you agree that they are referring to something like the following:

10 101654 97200 21 101654 97200

or

10 101654 97200
21 101654 97200

Any ideas?

Looking at the question 10 is the distance, 101654 maximum time in seconds and 97200 record time.
The way I understand it, this is not the start and end time for any runner, which has to be between 0 and 24 but could be any hours, instead the maximum time is a time at/or below which a runner is awarded a medal the record time is the time below which a runner will have set a new record time.
To me this can be any thing from 0 to any higher value.

On the last part of the question literally I think is 10 101654 97200 21 101654 97200 but I couldn't figure out how easy it would be to read the file so I took the last format which is
10 101654 97200
21 101654 97200

Yea I know its not the start and end time. I was just confused as to why would you have a minimum and a record time of 27h+ when you cannot ever have a runner time exceeding 24h.

Reading the values 10 101654 97200 21 101654 97200 ... from a file is not so hard.

It is basicaly one long input stream, hence you only need to do something like

ifstream fRecordsIn("infile.dat";
if ( fRecordsIn ) {

//read in up to first space
string temp;
fRecordsIn >> temp;
....
}

Just keep reading till eof if reached.

Hope this helps.

This question is actually very easy when you consider the use of multiple .cpp files and a header file with all prototypes. The secret is to break each function down and run it before you continue with the next function in a new .cpp file.

all fine and well, all prepared, yet I get the following error when compiling and running the actual program. any ideas?

Compiler: Default compiler
Executing g++.exe...
g++.exe "C:\Studies\COS112V\Assignments\RoadRace.cpp" -o "C:\Studies\COS112V\Assignments\RoadRace.exe" -pg -g3 -L"C:\unisa\mingw\lib" -lgmon
C:\DOCUME~1\Stewart\LOCALS~1\Temp/ccEFcaaa.o(.text+0x50b): In function `main':

C:/Studies/COS112V/Assignments/RoadRace.cpp:60: undefined reference to `CalculateTime(std::string, std::string)'
C:\DOCUME~1\Stewart\LOCALS~1\Temp/ccEFcaaa.o(.text+0x786):C:/Studies/COS112V/Assignments/RoadRace.cpp:82: undefined reference to `UpdateMedals(std::string, std::string, std::string, int, double, bool)'
C:\DOCUME~1\Stewart\LOCALS~1\Temp/ccEFcaaa.o(.text+0x944):C:/Studies/COS112V/Assignments/RoadRace.cpp:84: undefined reference to `DisplayCount(int, int, int)'

Execution terminated

I had a similar issue.

Are all of your source files in the same project? If not, create a new project (File -> New -> Project) and add all the .cpp files and the .h file to your project by rightclicking on the project in the Project/Class browser and selecting "Add to Project". Then try again. Hope it helps.

Hi Stewart

Did u create a function CalculateTime in a new utility header file included in the structure:
#ifndef UTILITY_H
#define UTILITY_H
#here u declare your prototypes, like #include <iostream>



in the body of this struture u put your function whar ever it may be, remember it can not be a main function of the form int main() or Apimain().
int CalculateTime(string Start, string End) {
statements...
}


# endif

Then in your main .cpp you call utility.h as one of your header files through the statement,

#include "utility.h"
int main() {
call function...
}

Believe me it is as simple as that.

btw... did anyone have problems with the DisplayCount function? To me, it seemed really simple, and when I compiled my program it didn't complain about it.

*But it just didn't work.*

medals were updated correctly, etc, but there was just no display of the medal count appearing anywhere...

Hi Velvet

Here is a clue to solving your problem, you can call the same file through ifstream more than once in your program, you can call that same file in more than one .cpp file.

I hope this help.

DisplayCount gets passed 3 integers, ie: the counting of medals is already done. All the function needs to do is display the results it is passed. Why would I need ifstream?

After running my program, my medals.dat file was updated perfectly, but there was no display (I assumed by "display" they wanted it to go to monitor, not medals.dat) of the number of medals to be awarded. I experimented with cout and clog, to no avail. Am I just way off base or misunderstanding what the function needs to do?