Display a bar-chart Program plan: Declare header file. Declare namespace. Define the method “main ()”, Declare the necessary arrays. Declare the necessary variables. Prompt the user to enter the file name. Get the file name from the user. Construct the input file stream. Open the input file. Check whether there is no file with the give name, If it is true, print the invalid message. Return “1”. Print the string “INPUT”. Get the character. Execute for a character, Print the character. Check whether the character is alphabet, Check whether the character is in uppercase, Advances the uppercase character position. Otherwise, advances the lowercase character position. Print the string “SUMMARY”. Execute loop for all lower and upper case letters, Check whether the value is less than “26”, Assign the value as “A”. Otherwise, Set the value as “a”-26. Print new line. Close the input file. Return “0”.

Question

Want to see the full answer?

Answer 1

Question

Chapter 2, Problem 6P

Program Plan Intro

Display a bar-chart

Program plan:

Declare header file.

Declare namespace.

Define the method “main ()”,

Declare the necessary arrays.

Declare the necessary variables.

Prompt the user to enter the file name.

Get the file name from the user.

Construct the input file stream.

Open the input file.

Check whether there is no file with the give name,

If it is true, print the invalid message.

Return “1”.

Print the string “INPUT”.

Get the character.

Execute for a character,

Print the character.

Check whether the character is alphabet,

Check whether the character is in uppercase,

Advances the uppercase character position.

Otherwise, advances the lowercase character position.

Print the string “SUMMARY”.

Execute loop for all lower and upper case letters,

Check whether the value is less than “26”,

Assign the value as “A”.

Otherwise,

Set the value as “a”-26.

Print new line.

Close the input file.

Return “0”.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Whentheuserenters!!,themostrecentcommandinthehistoryisexecuted.In the example above, if the user entered the command: Osh> !! The ‘ls -l’ command should be executed and echoed on user’s screen. The command should also be placed in the history buffer as the next command. Whentheuserentersasingle!followedbyanintegerN,theNthcommandin the history is executed. In the example above, if the user entered the command: Osh> ! 3 The ‘ps’ command should be executed and echoed on the user’s screen. The command should also be placed in the history buffer as the next command. Error handling: The program should also manage basic error handling. For example, if there are no commands in the history, entering !! should result in a message “No commands in history.” Also, if there is no command corresponding to the number entered with the single !, the program should output "No such command in history."

Activity No. Activity Time (weeks) Immediate Predecessors 1 Requirements collection 3 2 Requirements structuring 4 1 3 Process analysis 3 2 4 Data analysis 3 2 5 Logical design 50 3,4 6 Physical design 5 5 7 Implementation 6 6 c. Using the information from part b, prepare a network diagram. Identify the critical path.

2. UNIX Shell and History Feature [20 points] This question consists of designing a C program to serve as a shell interface that accepts user commands and then executes each command in a separate process. A shell interface gives the user a prompt, after which the next command is entered. The example below illustrates the prompt osh> and the user's next command: cat prog.c. The UNIX/Linux cat command displays the contents of the file prog.c on the terminal using the UNIX/Linux cat command and your program needs to do the same. osh> cat prog.c The above can be achieved by running your shell interface as a parent process. Every time a command is entered, you create a child process by using fork(), which then executes the user's command using one of the system calls in the exec() family (as described in Chapter 3). A C program that provides the general operations of a command-line shell can be seen below. #include #include #define MAX LINE 80 /* The maximum length command */ { int…