Create a C++ program that reads an infix expression, converts it to postfix notation, and computes the result. Must use linked stack.

The output should contain the expression in postfix notation and the result written in decimal form (2 digits after the comma). Both input and output should contain whitespaces.

Example:

Input:

25 + ( 4 * 5 ) 12

Output:

25 4 5 * 12 - +

33.00