COMP115 ass3 (1 Viewer)
- Thread starter Rahul
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ahhh no don't like new lecturer... he points to u and embarrasses u when u talk. He did that to my friend who wasn't even talking!
i prefer french dude. His accent was hard to understand, but he was still better
i prefer french dude. His accent was hard to understand, but he was still better
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^___^
"ok, now i'll c-out and do some stuff"
doe
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you could have a student class that has all the info (name, id, avg mark, grade etc). you could keep them in a linked list ordered by avg mark (ie highest mark at the start of the list, lowest at the end). finding the highest would be O(1), finding the lowest would be O(N) but easy (just traverse to the end), printing out the summary would be easy, just print out the excellent heading, then traverse the list printing till you get "good" mark, print the good heading, traverse and print and so on.
theres swisher ways of doing it but thats pretty straight forward
doe
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not to sound like your parents but: thats true but in the harder subjects make sure you understand all the stuff covered in the week, otherwise its too much to study for. like comp225, none of the concepts are particularly hard, theres just a lot of them you need to remember.
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Rahul
Dead Member
yeh....i understand, i have done c++ before, thats why i can 'bludge' a lot more. not the case with my other subjects though...lol, they are all new.
doe, seems like you have some comp units? or know stuff about them. what would be the next comp unit after COMP115, thats isnt relatively hard and does c++?
doe, seems like you have some comp units? or know stuff about them. what would be the next comp unit after COMP115, thats isnt relatively hard and does c++?
doe
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im doing a computing degree, so have done most of the comp units. i think after comp115 you do comp125, which is in c++ yes. it used to be in this unimpressive language called eiffel, but they changed it to be c++ cause thats what you'll use in comp225. another popular language is python you use for natural language stuff (comp249, comp348 and i think comp248 and comp349) and the university has bought in a few new subjects using java (comp229 and some other ones i think)
comp125 being hard is relative, i think its the first "real" programming subject, so they cover some material which may be unfamiliar to you like linked lists and objects. by real i mean its done predominatly by computing students, whereas 115 and 114 are done by a whole slew of people who study some other field and their degree just has a computing component so they have some basic skills/understanding. in the grand scheme of things the stuff in 115 and 125 are fairly easy but very important, so take the time to understand them and c++ well, as you'll be using c++ in other more advanced comp subjects at uni, and the concepts for the rest of your career as a programmer. trust me when i say understanding this stuff now will save you a world of pain later on. in second and third year the assignments get progressively more complex, and not understanding the language makes it that much harder to do them.
programming is a practical skill, and in my opinion it should be taught as a trade or craft, like a plumber or carpenter, not in a university. the more you do it the better you get. passing exams which are usually worth 70 - 80% of a subject is a case of being able to remember a lot of stuff for three hours. in the end, passing exams is how people judge if you "did well" at university, but try and pick up some skills while you're here.
oh if you need help with a comp assignment ask here or perhaps in #macuni on austnet (later at night more people are around) as its got a lot of comp students. im trying to cut down on my internet usage so dont check here much, so irc might be the best bet
comp125 being hard is relative, i think its the first "real" programming subject, so they cover some material which may be unfamiliar to you like linked lists and objects. by real i mean its done predominatly by computing students, whereas 115 and 114 are done by a whole slew of people who study some other field and their degree just has a computing component so they have some basic skills/understanding. in the grand scheme of things the stuff in 115 and 125 are fairly easy but very important, so take the time to understand them and c++ well, as you'll be using c++ in other more advanced comp subjects at uni, and the concepts for the rest of your career as a programmer. trust me when i say understanding this stuff now will save you a world of pain later on. in second and third year the assignments get progressively more complex, and not understanding the language makes it that much harder to do them.
programming is a practical skill, and in my opinion it should be taught as a trade or craft, like a plumber or carpenter, not in a university. the more you do it the better you get. passing exams which are usually worth 70 - 80% of a subject is a case of being able to remember a lot of stuff for three hours. in the end, passing exams is how people judge if you "did well" at university, but try and pick up some skills while you're here.
oh if you need help with a comp assignment ask here or perhaps in #macuni on austnet (later at night more people are around) as its got a lot of comp students. im trying to cut down on my internet usage so dont check here much, so irc might be the best bet
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Rahul
Dead Member
thanks, i'm not doing a comp degree, so i dont know if i'll do any further comp subjects as electives. just want to get a general idea.
i agree with your comment about programming as a practical skill. i learnt c++ by watching one of my friends coding, and then coding myself. there is only so much you can be taught by someone else, you have to do it on your own.
i agree with your comment about programming as a practical skill. i learnt c++ by watching one of my friends coding, and then coding myself. there is only so much you can be taught by someone else, you have to do it on your own.
Back on topic, I'm always a bit confused by these comp assignments - they always have these strange typos which mysteriously disappear from the site when I ask people about it (I have a printout to prove it! really!)
Anyway
Assignment 3 - the question thing:
scroll down a lot "You are required to give the definitions of declarared user-defined functions"
Don't you need that for the program to compile in the first place?
Source files:
regular:
This is a section of the original source:
.
.
.
// delcare other variables
inFile.open("students.txt"); // don't change any in this line
outFile.open("report_regular.txt"); // don't change any in this line
// don't use any absolute path for an input/output file
// input data and process them Lets call this point 1
outFile<<endl<<"+++++Section 1 Student List+++++"<<endl<<endl; // don't change any in this line
// output the data of section 1 to outFile Point 2
.
.
.
I notice that declare is spelt wrong.
Anyway:
Does the comment at point 1 mean that we have to process it between point 1 and point 2 (i.e. first do all the processing, then after point 2 do only outputting and no processing), or point 1 and the end (i.e you can do processing everywhere)?
bonus:
this got answered in the FAQ. So who's using those rather random functions?
anyone going to delete them?
Anyway
Assignment 3 - the question thing:
scroll down a lot "You are required to give the definitions of declarared user-defined functions"
Don't you need that for the program to compile in the first place?
Source files:
regular:
This is a section of the original source:
.
.
.
// delcare other variables
inFile.open("students.txt"); // don't change any in this line
outFile.open("report_regular.txt"); // don't change any in this line
// don't use any absolute path for an input/output file
// input data and process them Lets call this point 1
outFile<<endl<<"+++++Section 1 Student List+++++"<<endl<<endl; // don't change any in this line
// output the data of section 1 to outFile Point 2
.
.
.
I notice that declare is spelt wrong.
Anyway:
Does the comment at point 1 mean that we have to process it between point 1 and point 2 (i.e. first do all the processing, then after point 2 do only outputting and no processing), or point 1 and the end (i.e you can do processing everywhere)?
bonus:
this got answered in the FAQ. So who's using those rather random functions?
anyone going to delete them?
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^___^
wtf was that...
doe
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it depends on the compiler. some will just warn you about it, some will error out, in some languages its standardized that you must have it, im not sure about c++ and cant be arsed checking. the reaon its there is so the compiler can check the arguments for each function call are of the correct type. c has all functions implictly declared to return an int, implicit function declarations are the tool of the devil though. its considered sloppy not to put prototypes in. an easy way to avoid having to type out the prototype is to declare the function before it is used in the source file. say i have supplementary functions foo() and bar() used by main(), if my source file is laid out like this
int
foo(void)
{
...
}
int
bar(void)
{
...
}
int
main(void)
{
...
foo();
...
bar();
...
}
everything will be ok. if main() appears before foo() and bar() the compiler will generate a warning and maybe even error out. to stop this youd just put in a prototype eg
int foo(void);
int bar(void);
int
main(void)
{
...
}
int
foo(void)
{
...
}
and so on.
i think its just a guide to how you might want to do it, im 99% sure you wouldnt be penalised for processing and outputting as you read them in, but mail your lecturer to be sure.
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^___^
i can't even do the wkly exercise for this wk 
Orange Juice
so worthless i am
so true... just submit the template... as long as you submit something its all good
... Took me ages to do that weeky exercise.
Hint: you will need a funtion that gets you the lenght of a particular month of a particular year
Hint2: Then you need to do some calculations. Maybe like which date is first
Hint3: Then start with the first, calculate number of days to the end of the month, add a whole lot of month lengths, then number of days from the beginning of the month to the last date.
But don't just submit the template - you can probably get more imaginary marks by having if-then statements for the examples
oh, and what do you think of this:
#include < iostream.h > //spaced out so they show up
#include < stdlib.h >
#include < string >
#include < iomanip >
int main()
{
string str;
str = "hello";
cout.setf(ios::left);
cout << setw(6) << str << setw(6) << str << endl;
cout << setw(6) << "hello" << setw(6) << "hello" << endl;
system("PAUSE");
return 0;
}
Prints out:
hellohello
hello hello
Press any key to continue...
Why doesn't setw seem to work on strings?
Even if you change it to ios::right or delete the line altogether?
Hint: you will need a funtion that gets you the lenght of a particular month of a particular year
Hint2: Then you need to do some calculations. Maybe like which date is first
Hint3: Then start with the first, calculate number of days to the end of the month, add a whole lot of month lengths, then number of days from the beginning of the month to the last date.
But don't just submit the template - you can probably get more imaginary marks by having if-then statements for the examples
oh, and what do you think of this:
#include < iostream.h > //spaced out so they show up
#include < stdlib.h >
#include < string >
#include < iomanip >
int main()
{
string str;
str = "hello";
cout.setf(ios::left);
cout << setw(6) << str << setw(6) << str << endl;
cout << setw(6) << "hello" << setw(6) << "hello" << endl;
system("PAUSE");
return 0;
}
Prints out:
hellohello
hello hello
Press any key to continue...
Why doesn't setw seem to work on strings?
Even if you change it to ios::right or delete the line altogether?
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hint 2 is kinda irrelevant cos they expect a negative answer if you are counting backwards
i'm trying to do hint 3
thats the problem, adding the months
i'm trying to do hint 3
thats the problem, adding the months
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^___^
i shall start reading my textbook this wk then :\
MicK_eT
Terry mate!
i feel like breaking down and crying.. comp is sooo evil.. i cant do any of the evil weekly exercises and i cant do the assignment 3.. grr... evil exams at teh end of semester.. *sighs*maths is evil now too... *sigh*... i dunno what the hell they are doin now... hahah.. hmmmz...