nov cookoff 2014 brackets solution problem

general
1

what is wrong with my solution? it matches which solution which are ac. CodeChef: Practical coding for everyone

2

The problem I believe is with these lines:

 if(s[i]=='(')
{balance= balance++;}
if(s[i]==')')
{balance= balance--;}

When you are incrementing or decrementing a variable, you should just use:

balance++;
balance--;
2 Likes
3

You cannot rely on a statement:

x = x++;

or

x = x--;

because it is undefined in C++, check it here:

1 Like
4

Your solution is not working for example from problem statement…

5

you told me what the problem was but why it is a problem in my solution. can you please help.

6

simply because incrementing or decrementing doesnt work like balance = balance++;

balance++ is the equivalent of balance = balance + 1, another type is balance += 1;

4 Likes
7

I found this - How does a=a++ work in java - Stack Overflow

in C it’s undefined behavior

8

okay this is very interesting discussion topic…