Step 1: Execute Algorithm 1.

Step 2: Input the user’s choice among the graphs created.

Step 3: Input the user’s choice about the desired file format.

Step 4: If the user chooses the “.dl” file format, then execute Algorithm 2. If not, go to Step 5.

Step 5: If the user chooses the “.net” file format, then execute Algorithm 3. If not, go to Step 6.

Step 6: If the user chooses the “.vna” file format, then execute Algorithm 4. If not, exit.