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Re: [Dev-C++] 1D array
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From: Kononov A. <cl...@ya...> - 2008-03-17 12:59:56
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Hello!
Why do you use "static" storage-class specifier with member functions in your testcase2.cc?
I know it is a little bit late to ask this question on this topic.
But I really want to understand the difference.
Thanks a lot.
01.03.08, 07:31, Robert Alatalo <ral...@gm...>:
> Hello,
> A couple of points... as was mentioned you need to figure out
> what you want months to be. If you want it to be a simple array you
> can do as was suggested:
> char* months[] = { "January", "February", ... };
> or you could create a class called months which could be much more
> complicated, which depends upon what you are planning on doing next,
> so let me give you a couple of quick working solutions for you to play
> with. Another thing to point out that it's rather bad form to use the
> same variable name for two nested loops. It may actually work because
> the inner loop variable will hide the outer loop variable which isn't
> actually being used but hiding could make it more confusing if you
> actually did want to use the year loop for something in the future.
> Also, the << is used repeatably, it's a standard operator , think of
> it like += where you just keep taking on values at the end,
> so
> cout<<"Please enter the # of years.">>endl;
> should be
> cout<<"Please enter the # of years."<<endl;
> Another thing to point out, "using namespace std;" will bring
> everything from the std name space into the global name space and
> should be avoided beyond simple test cases, it's find for this but I
> am going to show you a more deliberate form:
> using std::cout
> using std::endl
> since that's what you're using..that way you won't being in something
> from std that you didn't intend.
> also, it's a small performance thing but a good habit to learn... use
> ++Variable rather than Variable++ if you don't need the old value for
> anything, otherwise the compiler does something like { int temp ; temp
> = value ; value += 1 ; return temp }
> Also, arrays are Zero based in C/C++ so you need to go from 0 to 11 or
> create months like {"Dummy","January"....}
> I attached two samples of 'working' code, look if you want.... I know
> it can be annoying sometimes to get the syntax correct even when you
> know what you're doing, so hope they help.
> -Robert
> On Fri, Feb 29, 2008 at 5:12 PM, Shawn <tre...@gm...> wrote:
> >
> > It's just going to be a list of the months that the code in the for loop
> > will iterate thru...string data. When they enter one for the outside loop
> > of the year, it will goto the inside loop and each time the loop asks for
> > the average rainfall, I want it to start for Jan, next prompt for Feb, taken
> > directly for the array I'm trying to initialize.
> >
> > Thanks.
> >
> >
> >
> > Per Westermark wrote:
> > You must have missed something in your C++ book. Class of what type? And
> > if you try to get an array of January, February, ... - where is the
> > definition for January?
> >
> > char* months[] = { "January", "February", ... };
> >
> > In this case, months has a known data type - array of string pointers.
> > In this case, the array elements are not undefined variables, but of
> > directly specified string constants.
> >
> > /pwm
> >
> > On Fri, 29 Feb 2008, Shawn wrote:
> >
> >
> >
> > I've never tried using arrays before in C++, just am familiar with using
> > them in python. I tried initializing the array as string months and
> > then {"January","February", ect} but the complier told me I needed to
> > set it up in constructor method. I looked that up in my book and came
> > up with this, but now I get the error that January isn't declared.
> >
> > My intention is to have it automatically advance to the next month in
> > the list by months[i] in the inner loop. Am I on the right track?
> >
> > Thanks!
> >
> > #include<iostream>
> > #include<iomanip>
> > using namespace std;
> >
> >
> >
> > int main()
> > {
> >
> > int years = 0;
> > int counter = 0;
> > int month = 0;
> > int average = 0;
> > *class months =
> > {January,February,March,April,May,June,July,August,September,October,November,December};*
> >
> >
> > months++
> > cout<<"Please enter the # of years.">>endl;
> > for(i=years; i<=years; i++1)
> >
> > {
> > for(i=12; i<=12; i++1)
> > {cout<<"Please enter the rainfall for"<<months[i]<<;
> > cin>>month
> > sum = sum + month
> > counter = counter + 1
> > }
> >
> > average = sum / counter
> >
> >
> > cout<<"The total number of months was "<<counter<<".";
> > cout<<"The total inches of rainfall was "<<sum<<".";
> > cout<<"The average rainfall was "<<average<<".";
> >
> >
> >
> > return 0;
> > }
> >
> >
> >
> >
> >
> >
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