Postfix Expression Evaluation Troublesome(PEET)

Question

I have converted my infix into postfix expression, which is

3*(4+5)/10-1     into      345+*10/1- 

How we can read 10 from postfix expression, because string length function reading just 1 instead of 10 and there is also a following case more that

3*(4+0)/10-1     into      340+*10/1- how we can differentiate that,

is 40 is forty or four zero and same case with 10 or one zero

I am using turbo c++

Answer 1

Please place a white space between (or whatever delimiter) numbers. 3 4 0 + * 10 / 1 -