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Hello everyone,
I need assistance in parsing a mathematical formula that is input by the user. Say a user inputs the following; 4*(370-345)+12.
How would I go about parsing such a string? We would have no idea how many numbers or operations the person enters, within a set character limit.
Any hints would be much appreciated. Thanks in advance.
Maybe you should take a look on this http://www.gnu.org/software/bison/ maybe it is too much for what you need but at least a look won't hurt.
Quote:
Originally Posted by ashkya
Off the top of my head, you'd need to pull it all into a string. You'd need to know your operators (*,+,-,parens) and find them.... I'd say the stuff before, after and between the operators are the things you'd probably figure are numbers.
I might be wrong, but at least it might get you going in the right direction.....