C++ I cant get my function to run in my program

The Function won't initiate can someone help? When I run it in the debugger program skips over function and I don't know why?

#include <iostream>

 using namespace std;

int size_array= 0;
int *data_array;
void sorting(int *[], int);


int main()
{
cout<<"enter in array size \n";
 cin>>size_array;
int *data_array=new int(size_array);

 for(int i=0;i<size_array;i++)
  {
   cout<<"enter number "<<i+1<<endl;
   cin>>data_array[i];
  }
 **int sorting(int data_array, int size_array);**

for (int i=0; i<size_array;i++)
  {
    cout<<data_array[i]<<endl;
  }

return 0;
}