how to store values in arrays?

[iky]

hi. im having trouble storing values in arrays. i have to enter them in one by one but they dont seem to get stored when i have to use the values in other functions.

[maeriden]

Post a sample of code showing how you use them

[iky]

this is the function i am trying to use them in:

void readthearrays (int score1[], int score2[], int score3[], int k) {
    int j;
                                                   
    for (j = 0; j < k; j++) {
        cin>> score1[17] >> setw(10) >> score2[17]>> setw(10)>> score3[17];
    }
}

and this is in the main program:

int main()
{
    int score1[SIZE], score2[SIZE], score3[SIZE];
    int n = 17;
    int largest, smallest, howfarapart;
    
    cout<< "n is " << n << endl;
    cout<< "here is the original data" << endl;
    cout<< "array1" << setw(10) << "array2" << setw(10) << "array3" << endl;
    
    readthearrays(score1, score2, score3, 17);
    cout<< endl;
    return 0;
}

[Aramil of Elixia]

have you defined size yet? replace in the function you wrote look at line 5 and replace each 17 with j

[iky]

i wrote this on top:
const int SIZE = 50;

line 5 is for another function that is not shown here. for that function i have to find the largest, smallest, and how far apart the large and small one are but i cant do that if my values are being stored.

[maeriden]

for (j = 0; j < k; j++) {
        cin>> score1[17] >> setw(10) >> score2[17]>> setw(10)>> score3[17];

Since you're using a loop I believe you want to insert values in all of the elements of the arrays. In that case it is cin >> score[j], You are writing every value you input in the same position, the 18th (arrays start from 0), so the previous values are overwritten

I'm confused by cin >> setw(10). I didn't know you could use it for istreams

[iky]

i want them to be spaced out and aligned under each other neatly.
this is what i want this part of the output to look like:

array1       array2         array3
34              23            12
54              45            54
76              34            47
123             3             345

i have to have 17 values under each array. is there a way the values can go like that automatically when i type it in instead of be pressing the spacebar after each one.

[Aramil of Elixia]

not in c++ unless you want to go really deep

[iky]

ill stay away from the deep stuff for lol. so i would have to press space after typing them?

[DETpfSEw]

i think setw(10) does not work with cin>>. you have to use it while you print arrays using cout<<.
moreover use itrator i in index of array while taking input.

void readthearrays (int score1[], int score2[], int score3[], int k) {
    int j;
                                                   
    for (j = 0; j < k; j++) {
        cin>> score1[j] >>  score2[j]>> score3[j];
    }
}

[iky]

um.. im just starting to learn arrays so I'm not sure what you mean by "itrator i in index of array".

[maeriden]

It's a typo. In loops 'i' is frequently used as index for arrays, but he meant "use j". Also it's not really an iterator, but an offset from the first element of the array

[iky]

oh ok. so what am i doing wrong? is there a way of making them in three columns.

[Aramil of Elixia]

yes, whats ur operating system?

[iky]

I'm using a macbook so im using xcode. codeblocks wasnt working.

[Aramil of Elixia]

good choice. i always felt code blocks was more windows favored. search i think theyre called x apps

[iky]

what should i be looking out for?

[Aramil of Elixia]

its like win32 for mac

[iky]

i think ill stick to pressing the space bars. i have a new problem now. i need to find the largest, smallest, and the range of the values. i think i have the correct function but maybe something is wrong in the main.
here is the function:

int findlargesmallrange (int numb[], int n, int &, int &, int &) {
    int largestsofar = numb[0];
    int smallestsofar= numb[0];
    int howfarapart;
    
    for (int j = 0; j < n; j++) {
        
        if (largestsofar < numb[j]){
            largestsofar = numb[j];
            return largestsofar;
        }
        if (smallestsofar > numb[j]){
            smallestsofar = numb[j];
            return smallestsofar;
        }
    }
    howfarapart = largestsofar - smallestsofar;
    
    return howfarapart;
}

and here is the main:

int main()
{
int score1[SIZE], score2[SIZE], score3[SIZE], numb[SIZE], sumscores[SIZE];
    int n = 17;
    int largest, smallest, howfarapart;

 findlargesmallrange(numb, 17, largest, smallest, howfarapart);
    cout<< "largest is " << largest << endl;
    cout<< "smallest is " << smallest << endl; //i have to run this part 4 times for each array and the new array. 
    cout<< "they are " << howfarapart;
    cout<< " apart"<< endl << endl;

[Aramil of Elixia]

line one of your program you cant just have int&. you have to actually name the variable