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Question on classes

 
Greenhorn
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Can i send an object to a constructor and then from that constructor send it to a different constructor in the same class?
heres the code

Also, when i parse my string in the if statements, the compilier can't recognise it. is it because of the if statements and can i fix it somehow?
 
Ranch Hand
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some observations here,
1. when parse quadLine, you could use "+-" as delimiters.
2. put token-getting code inside a while loop as user may not always
enter a fully quadratic function eg, 2x^2 - 8,
ie : you don't always have 3 tokens to fetch.
 
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