Anybody know C++?

[thispego]

it'd be alot cooler if someone did :smokin

[danyel]

I know a bit but Im no specialist, whats your problem?

[thispego]

Write a program that reads records from an input file (prog5inp.txt). Each record contains a student ID#, the student’s semester average, and the student’s assigned letter grade. The program determines how many of each letter grade was assigned and writes in tabular form the input values plus the ‘calculated’ values to an output file, prog5out.txt. Do not use functions other than main to solve this problem. All code should be kept inline. Do not use classes or arrays.

I'm supposed to use a count loop

[thispego]

general form

declare loop index variable

for (initialize loop index variable; test logical expression ; increment)
{
execute statement(s);
}


e.g.

#include <iostream>

int main()
{
int i;

for (i = 4; i >= 1; i = i - 1)
{
cout << "Hello" << endl;
}

return 0;
}
this is an example of a count loop, i'm just not sure how to plug it in to the program using what I need. C++ is so particular which makes it so complicated

[danyel]

I'm not familiar with the term "count loop" if that has a meaning of its own, but it doesn't seem like a really hard program to do.

You read the input file, while the id doesnt changes for each record you add one to the according counter (one for each possible grade letter).

Once the Id changes you write the output record with the totals in the counters, and then you reset them to zero.

[thispego]

I'm not familiar with the term "count loop" if that has a meaning of its own, but it doesn't seem like a really hard program to do.

You read the input file, while the id doesnt changes for each record you add one to the according counter (one for each possible grade letter).

Once the Id changes you write the output record with the totals in the counters, and then you reset them to zero.
so then(using previous example)~
#include <iostream>

int main()
{
int number_of_student;

for (number_of_student = 1; number_of_student >= 1; number_of_student = number_of_student + 1)
{
cout >> student_id >> student_smstr_avg >>
student_grade;
}

return 0;
}

??

thats totally wrong isnt it?

[danyel]

In C, for acts as a while structure, so you could do something like this

int main()
{

openfile

for (file.movefirst; file.eof(); file.movenext)
{
count grades and write output
}

closefile

return 0;
}

Sorry, I dont remember C++ syntaxis

[thispego]

I'm not familiar with the term "count loop" if that has a meaning of its own, but it doesn't seem like a really hard program to do.

You read the input file, while the id doesnt changes for each record you add one to the according counter (one for each possible grade letter).

Once the Id changes you write the output record with the totals in the counters, and then you reset them to zero.
how does it know when to stop?

[danyel]

how does it know when to stop?

When the Id changes, you'd need to store in a variable the previous read Id.

[thispego]

When the Id changes, you'd need to store in a variable the previous read Id.
thanks danyel, i'll try it out some more

[katyon6th]

They taught us VB in school.

Fuck VB.

[zero signal]

VB's kinda ok if you're into Windows.

I learned C/C++ because I had to for EE, but I wouldn't be caught dead programming something for myself in those languages. I like Ruby, Perl and Python best.

[spurster]

Someone needs us to do this/her homework?

Can't you just copy most of what you need out of your textbook? You know, that thing made out of dead trees that you are supposed to read.

[NorCal510]

Damn u got a c+ thats a good ass grade

[thispego]

Someone needs us to do this/her homework?

Can't you just copy most of what you need out of your textbook? You know, that thing made out of dead trees that you are supposed to read.
no asshole
my dumbass teacher told us we probably wouldnt need the textbook

now i'm here wondering if I somehow got stuck into an upper level programming course where everyone seems to be 10 lessons ahead of me

[zero signal]

That problem you were assigned is pretty simple. It's par for an introductory course.

But, as with any class in CS/SE/programming, it's normal to see people who are light years ahead of you.

[thispego]

That problem you were assigned is pretty simple. It's par for an introductory course.

But, as with any class in CS/SE/programming, it's normal to see people who are light years ahead of you.
It would be very simple were it not for the conditions she placed on the program.

i think i'm one of two people in that class who are not CS majors :madrun

[zero signal]

You don't need classes or arrays for this problem.

I agree that not being able to use functions is pretty fucking stupid, though. That just makes your program longer and harder for your teacher to read, and harder to debug.

[Carie]

It would be very simple were it not for the conditions she placed on the program.

i think i'm one of two people in that class who are not CS majors :madrunThat is pretty basic logic for any programming class. But if most people in your class are way ahead of you, she may be adjusting how she teaches to their level. Sorry :(

[Carie]

I agree that not being able to use functions is pretty fucking stupid, though. That just makes your program longer and harder for your teacher to read, and harder to debug.
I disagree. I think for a basic class, they are learning the logic behind the functions.

[thispego]

That is pretty basic logic for any programming class. But if most people in your class are way ahead of you, she may be adjusting how she teaches to their level. Sorry :(
it's cool, ive pretty much come to terms with it, but what pisses me off is that she is making little to no effort to help me along.
3 summer classes = little time to devote to each outside of class

[Das Texan]

I truly abhor C and C ++ programming languages.

[zero signal]

I disagree. I think for a basic class, they are learning the logic behind the functions.
Well, that's true. Some students learn better with the sadistic approach :lol

[LaMarcus Bryant]

no asshole
my dumbass teacher told us we probably wouldnt need the textbook

now i'm here wondering if I somehow got stuck into an upper level programming course where everyone seems to be 10 lessons ahead of me


Shrda, c++ was the language people are taught in high school, brah.

[Man Sauce]

Do you go to Southwest Texas State?

[thispego]

Do you go to Southwest Texas State?
yes i do
you had/have the class?

[thispego]

Shrda, c++ was the language people are taught in high school, brah.
yeah, but back then it was c+p = copy + paste

[E20]

PM or ask Baseline_Bum, he's a genius when it comes to programming/mathematics.

[spurster]

no asshole
my dumbass teacher told us we probably wouldnt need the textbook

now i'm here wondering if I somehow got stuck into an upper level programming course where everyone seems to be 10 lessons ahead of me
Well, 90% of programming (at least, of the beginning sort) is copying what you need from a program that is close to what you want to do. Your textbook would/should have examples of reading in and printing out information. Maybe you have online notes that you can look at for this purpose.

Anyway, to give some help, you should first write a program that can open the input file, read the individual items from one line, print them out again, and close the input file. Then you'll need to put the read and print parts in a loop so they'll get done multiple times. Next, you will need to open and print to the output file. Finally, you'll need an if or a switch statement to count the grades, which you will print out after the loop. I assume because you are supposed to use a count loop that you can assume that there are a certain number of lines in the input file.

[travis2]

I assume because you are supposed to use a count loop that you can assume that there are a certain number of lines in the input file.

Or use a "while not eof" condition...

[SpursWoman]

no asshole


"asshole" is a college professor ... you might want to be a little nicer. :lol

[tlongII]

That sounds like the same assignment I had 20 years ago! :lol

[SpursWoman]

That sounds like the same assignment I had 20 years ago! :lol


Me, too ... writing in Pascal. :spin

[baseline bum]

Why would you use a count loop for reading in input from a file? The only way it would work is if you knew exactly how many records you had to read in beforehand. Even if you did, it's just as easy to do something like...



while (is >> sid ) {
is >> avg;
is >> lgr;

/* do other stuff */
}


where is is the input stream you're reading from, sid is a std::string representing the student ID, lgr could be of an enumeration type with values {A,B,C,D,F}, and avg could be a float or an int, depending on how the grader stored it. There's no need to know how many records there are in this case, assuming each record is entered correctly in the prog5input.txt file. It's a much more flexible solution to just keep reading until you hit the end of the file, using the above code block.

[mookie2001]

ShrdaROFL