a) Modify the program for parsing an arithmetic expression to produce a post-fixed expression from an in-fixed expression. b) Modify the program for parsing an arithmetic expression to produce a pre-fixed expression from an in-fixed expression. c) Write a program to compute the value of pre-fix expression d) Write a program to compute the value of post-fix expression.

assume that an expression only contains integers as operands.

please write the code by c++, thanks.

3. Use any language for the question (Hand in source programs and test runs). a) Modify the program for parsing an arithmetic expression to produce a post-fixed expression from an in-fixed expression. b) Modify the program for parsing an arithmetic expression to produce a pre-fixed expression from an in-fixed expression. c) Write a program to compute the value of pre-fix expression d) Write a program to compute the value of post-fix expression