More Logic

The flowchart as it is needs a few more details.

The box "Process the coefficients" needs to be expanded using rule five of structured programming: the box can be replaced by another structure (which itself can be made of structures). The flowchart at right shows the structure that replaces the "Process" box.

But the new boxes are labeled A, B, C ...

Pick what description should go into each box so that the coefficients are processed correctly.

• A    
• B    
• C    
• D    
• E    
• F    
• G    
• H    

Pick from the following scrambled phrases:

• one root
• error message
• disc = b*b - 4*a*c
• disc < 0.0
• a == 0.0 ?
• no real roots
• disc == 0.0
• two roots