File I/O ascending order question?

[keclipse2525]

I have been working on this for a little while now im using the library <fstream> and <iostream>. The object of my program is to read two separate files that contain different amounts of random numbers for a total amount of 50 numbers in the output file. The problem that I'm having is that when I get all the numbers from the 2 files and write and append them to the output file now i dont understand how to get the output file which is a c-string to be able to sort using selection sort. I have all the numbers in the output file but I cant figure out how to use the c-string to sort by using selection sort.

#include <fstream>
#include <iostream>
 
using namespace std;
//void selectionsort(int [], int);
 
int main()
{
    char group1[2000];
    char group2[2000];
    char next[2000];
 
    ifstream ifs2;
    ifstream ifs;
    ifstream ifs1;
    ofstream ofs;
    ofstream ofs2;
 
 
    ifs.open("hw1_input1.txt");
    ifs1.open("hw1_input2.txt");
    ofs.open("output.txt");
    ofs2.open("temp.txt");
 
 
 
    while(ifs.getline(next, 2000))
    {
        ifs.get(group1, 2000);
        ofs << group1 << "\t";
 
 
 
        ofs << next;
 
 
    }
 
    while(ifs1.getline(next, 2000))
    {
        ifs1.get(group2, 2000);
        ofs << group2 << "\t";
 
        ofs << next;
    }
 
    ifs2.open("output.txt");
    ifs2.get(next, 2000);
 
 
    ifs.close();
    ifs1.close();
    ofs.close();
 
    return 0;
}
 
/*void selectionsort(int a[], int size)
{
 
 
 
}*/
 
 

I dont have the selection sort function in there because i cant figure out how to get it into an array so that i can sort the output file.

any suggestions are well appreciated

[weaknessforcats]

You will need to get your numbers into an array where each element is a number.

Then you can sort the array.

[RRick]

There are sort programs (i.e. sort in unix) that will sort a text file of numbers, but you have to be careful. Each number needs to be on its own line and any spaces play havoc with the sorting.