In C$++$ please

Example output:

please enter data file name: symbols.txt

data read

Please enter an expression, ctrl$-$Z to stop: $10*10/4*(2+3)$

Expression Tree created:

$*$

$/$

$*$

$10$

$10$

$4$

$+$

$2$

$3$

PostOrder: $1010*4/23+*$

Evaluation result: $125\mathrm{.}00$