#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
vector<int> v;
ifstream fin("file1.txt");
if (fin.is_open() == false) {
cerr << "File1 cannot be open!" << endl;
return -1;
}
ofstream fout("file2.txt");
if (fout.is_open() == false) {
cerr << "File2 cannot be open!" << endl;
return -1;
}
int temp;
while (fin >> temp) {
v.push_back(temp);
}
sort(v.begin(), v.end());
for (int i = 0; i < v.size(); i++) {
fout << v[i] << " ";
}
fin.close();
fout.close();
return 0;
}
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