just need a quick infile code for data into an array

[iKraKen]

im not familiar with ifstream and haven't found any examples of the method i need so im asking for assistance
ive been building a code and my client doesn't want it to be preset data anymore , wants to be able to read from the dat file, so they can change the dat file to suit them for volunteers of a different year, ijust need a quick code to patch this , and it would be a big help

all i need is a short infile code that will read the months 1 data numbers into a array , then read months 2 data numbers into another array, then months 3 data numbers into a final array

(the code was original a preset data built into it , so now i dont want to change to much so it still functions correctly)

thanks for your help in this matter

vol.dat file

Volunteers DATA LIST

<name>
<Yuen, Bill, Steve, Alice, Susan, Julio, Gary, Mike, Mary, Rich, Shilpa, Ann>

<months DESRIED>
<months 1><1,2,3,4,5,6,7,8,9,10,11,12>
<months 2><12,12,10,9,8,7,6,5,4,3,2,1>
<months 3><6,5,4,3,2,1,7,8,9,10,11,12>


i would like to read the months 1,months 2, and months 3 data into 3 different arrays so the arrays would be like so in the program

int m1[]={1,2,3,4,5,6,7,8,9,10,11,12};
int m2[]={12,12,10,9,8,7,6,5,4,3,2,1};
int m3[]={6,5,4,3,2,1,7,8,9,10,11,12};

im then going to compare these arrays in a compare function i created to all permutations of 12!(months 1-12 basically)
this will take a while to run but it will find the best possible set of months for the volunteer groups.
the code has a linked list system class and a class item which is a client of system class. the two classes will allow me to compare an array v[]={1,2,3,4,5,6,7,8,9,10,11,12}
permute v[], which is 12!
compare v[] to m1 if matching elements add 3
compare v[] to m2 if matching elements add 2
compare v[] to m3 if matching elements add 1
if no match add zero
return score
scores will be compared and then cout best score and best permutation

[LB]

iKraKen wrote:

all i need is a short infile code that will read the months 1 data numbers into a array , then read months 2 data numbers into another array, then months 3 data numbers into a final array

int arr[3][12];

std::ifstream DataFile ("data.txt");
for(unsigned ai = 0; ai < 3; ++ai)
{
    for(unsigned mi = 0; mi < 12; ++mi)
    {
        DataFile >> arr[ai][mi];
    }
}

Sample data.txt:

1 2 3 4 5 6 7 8 9 10 11 12
12 12 10 9 8 7 6 5 4 3 2 1
6 5 4 3 2 1 7 8 9 10 11 12