simon and pedro are working together on a science experiment. they collect and record their data in excel spreadsheets. they save their data as a web page and post it on their shared internet site. simon’s data is not updating. he followed the steps below when saving his excel spreadsheet.

step 1: on the file menu, click save as
step 2: select “web page” from the “save as type” box
step 3: select publish
step 4: select the “open published web page in browser” check box
step 5: click publish

which step was incorrect?

step 1: simon should have selected print and printed the spreadsheet as an htm file.
step 2: simon should have selected “excelworkbook” from the “save as type” box.
step 3: simon should have selected save instead of publish.
step 4: simon should have selected autorepublish.

We as humans write math expression in infix notation, e.g. 5 + 2 (the operators are written in-between the operands). in a computer’s language, however, it is preferred to have the operators on the right side of the operands, i.e. 5 2 +. for more complex expressions that include parenthesis and multiple operators, a compiler has to convert the expression into postfix first and then evaluate the resulting postfix.write a program that takes an “infix” expression as input, uses stacks to convert it into postfix expression, and finally evaluates it. it must support the following operations: + - / * ^ % (example infix expression: (7 - 3) / (2 + 2)postfix expression: 7 3 - 2 2 + /result: 1guidelines: 1. you will need to use stacks in three placesa. one for the parenthesis check [char stack]b. one during infix to postfix [char stack]c. one during evaluation [int stack]for a and b above, you can use same array and same push, pop method as both ofthem are char. but for evaluation you have int stack and you might consider to createanother push pop method to handle it. maybe push_int, pop_int, etc. or find otherstrategy to utilize existing push pop method2. you can create a function for obtaining operator priority. that function should take anoperator as input and return its priority as an integer. this function will you a lot andreduce repeated code3. during evaluation you will need to convert char into integer. example for single digit: char c = '5'; int x = c - '0';