Question

Write a program that receives one command-line argument: the name

of a text file. Your program will work as follows:

 Start out by creating a child process.

 The child process calls exec to run cat command with command-line argument that

the parent received.

 The parent process calls wait so that it blocks until the child terminates and passes

back its termination status.

 If the child process terminates without error, the parent spawns another child and,

again, calls wait so that it can block until the child terminates.

 The new child calls exec again, but this it runs wc command on the same

the argument that the parent received from the command line.

 Once the parent learns that the child has been terminated, it goes on to terminate also. If

the parent gets to this point, it’s because all has gone well.

Answer 1

class File
{
public:
	File(string filename)
	{
		try
		{
			cout << "File" << filename << "open" << endl;
		}
		catch (exception exp)
		{
			cout << "Error! " << exp.what() << endl;
		}
	}
private:
	string filename;


};
int main()
{
	string filename;
	cin >> filename;
	File f(filename);
}