Write a C++ program to evaluate postfix expressions. Your program should take postfix expression as an input, process it with the help of stack and display the result after performing required calculations. Only following Binary operators are allowed for this program: +, -, *, /, ^ [addition, subtraction, multiplication, division, exponentiation] If some error occurs while processing postfix expression, your program should display a meaningful message, like: Error: Division by zero not allowed Error: Two operands required for __ operator Error: Invalid postfix expression

Sample Run: Enter postfix expression to evaluate: 10 20 + Entered by user The result is: 30 Do you want to enter another postfix expression to evaluate? [Y/N] Y Entered by user Enter postfix expression to evaluate: 30 40 + * Entered by user Error: Two operands required for * operator Do you want to enter another postfix expression to evaluate? [Y/N] Y

Enter postfix expression to evaluate: 30 40 + 50 60 * Entered by user Error: Invalid postfix expression Do you want to enter another postfix expression to evaluate? [Y/N] Y Entered by user Enter postfix expression to evaluate: 6 2 3 + - 3 8 2 / + * 2 ^ 3 + Entered by user The result is: 52 Do you want to enter another postfix expression to evaluate? [Y/N] N Entered by user Thank you for using this program.