Question

Creating a Linked List of Char

Answer 1

i have a program that computes a stack in linked list for numbers, and i was wondering if it could be done the same for characters.

Answer 2

@wio

Answer 3

for numbers? what do you mean?

Answer 4

nvm, i got that one, but i'm stuck with another one.
i am trying to convert Infix expression in to Postfix expression but my code is not changing it, can you see the code and see what i did wrong?

Answer 5

I don't know what you are trying to do or what language you are using.

Answer 6

im using C++, and tying to convert Infix Expression to Postfix expression

Answer 7

operation overriding?

Answer 8

yes

Answer 9

You put (int) as an argument and don't use it, that will change it to postfix.

Answer 10

can you clarify it more?
also i can't use libraries

Answer 11

In order to change the function signature so it overloads postfix instead of prefix, you need to have to give it an int parameter.

Answer 12

sorry, but what did you mean by operation overriding?

Answer 13

Making it so that you can use operations like +, ++, -, etc. on objects of a class that has defined their behavior.

Answer 14

the struct is for the stack

Answer 15

What is the problem?

Answer 16

it doesn't crash or anything, it runs
so basically, the program asks the user to input "Infix expression", and it is suppose to convert it to "postfix", but it doesn't convert it; it gives me back the "Infix expression" instead of the "postfix"

Answer 17

what are examples of input?

Answer 18

Your code doesn't even compile.

Answer 19

it can be anytype of expressions like
for example:
5+9/5-1*23
something like that

Answer 20

it should, hold on let me check it again

Answer 21

also, you didn't even indent it properly.

Answer 22

take out the return value on "void pop" and it should compile

Answer 23

will it have an effect on the code for not being indented properly?

Answer 24

No, when it isn't indented properly, my willingness to help shrinks considerably.

Answer 25

Why should this code even work?

Answer 26

when i paste it to notepad, the lines went out of control

Answer 27

Code has no comments and is hard to read. I have no idea what it is supposed to actually be doing. What do you expect the output to be?

Answer 28

It's okay, i'll try to fix it up tomorrow. Thanks for your time

Answer 29

Here is what you need to do.

Create a function which prints our what is in your stack.
Then print out your stack after each loop.

Answer 30

okay

Answer 31

Good news is that your stack is working at the very least. Bad news is it is always empty in your code.

Answer 32

I moved the
```
while (!empty()){
convertpost += topy();
pop();
}
```
To be outside of the for loop, and got `59+5/1-23*` for output

Answer 33

```
int highpress (char a){
int worth = -1;
switch (a){
case '+':
case '-':
worth = 1;
break;
case '*':
case '/':
worth = 2;
break;
case '(':
case ')':
worth = 3;
break;
case '$':
worth = 4;
}
return worth;
}
```
Putting break statements in your switch statement got output of `595/+123*-`

Answer 34

moving the the "while"outside the "for loop" worked :)
Thanks a lot