Thread: parenthesis, "(", has a matching closing parenthesis, ")"

Hi Everyone,

I am trying to write a program that does Expression evaluation, the expression is can be a conjuction of expression or conjuction of expression and condition.

for example:
(((a+1) > 1) AND(a != 0))

I want to make sure that i have a vaild statement so i want to make sure their are appropriate "(" and close ")" parenthesis. Please let me knwo if you know of a C# or C++ or C code that already does what i need to do.

I also want a suggestion of how about doing this...:-)

Thank You,

int num_paren = 0;

You increment it everytime you see a '('
You decrement it everytime you see a ')'

If it's ever negative, you've got a problem
If it's non-zero at the end, you've got a mis-match

Hi Everyone,

The input got me going, now my question is how to i make it so it delimits by AND/OR. So before the delimiting the string will be like:
((((a+1) > 1) AND(a != 0))OR(x > y))

after the delimiting it will be:
((a+1)>1)
(a!=0)
(x>y)

Please give me your suggestion on how about doing it...
:-)

In C# you can use the Split Method on strings. It will return an array of strings containing what you need. Such a simple logic might not be enough for your needs though, as your split method has to be sensitive to brackets...