Given the following code. The input file, in.dat, is a copy of the program code in this problem. How will the output file, out.dat, differ from the input file?

```
// file: testQuestion.cc
// test question: copy files: in.dat to out.dat
// in.dat is a copy of a file containing this code.
// use EOF to terminate copy loop
#include
#include // for exit()
using namespace std;

int main()
{
ifstream in;
ofstream out;
in.open("in.dat");
out.open("out.dat");
while(in >> ch)
out << ch;
return 0;
}
```

The code line
in >> ch
will ignore all white space (blanks, tabs, end of line) in the input file. The output in the file, out.dat will be nearly useless. For example, every variable declaration will have the necessary space between the type and the identifier removed.