You MUST use switch statement to complete the following. Write a program to achieve a four-function calculator. The program will first take two real (non-zero) numbers as input from the user. You can safely assume the user will always input two numbers. The program then outputs the following message to prompt another user input:

Please select:
: add two numbers.
-: subtract two numbers.
*: multiple two numbers.
/: divide two numbers.

The user then enters one of the above characters for the program to perform the corresponding calculation on the previously two numbers. If the user enters other character than the above, the program will print out Unknown calculation and exits.

Ex: if the user enters: 2.5 4 *
the program will output: 2.5 * 4

Write a modular program (no classes yet, just from what you learned last year), that allows two players to play a game of tic-tac-toe. use a two-dimensional char array with 3 rows and 3 columns as the game board. each element of the array should be initialized with an asterisk (*). the program should display the initial board configuration and then start a loop that does the following: allow player 1 to select a location on the board for an x by entering a row and column number. then redisplay the board with an x replacing the * in the chosen location. if there is no winner yet and the board is not yet full, allow player 2 to select a location on the board for an o by entering a row and column number. then redisplay the board with an o replacing the * in the chosen location. the loop should continue until a player has won or a tie has occurred, then display a message indicating who won, or reporting that a tie occurred. player 1 wins when there are three xs in a row, a column, or a diagonal on the game board. player 2 wins when there are three ox in a row, a column, or a diagonal on the game board. a tie occurs when all of the locations on the board are full, but there is no winner. input validation: only allow legal moves to be entered. the row must be 1, 2, or 3. the column must be 1, 2 3. the (row, column) position entered must currently be empty (i.e., still have an asterisk in it).

Apython programming question: assume s is a string of lower case characters. write a program that prints the number of times the string 'bob' occurs in s. for example, if s = 'azcbobobegghakl', then your program should print number of times bob occurs is: 2

Norder to receive financial aid at his vocational school, mario must fill out the fafsa. the fafsa is a form that must be completed to determine . in order to complete a fafsa, you must submit . the fafsa can students obtain