In java, without Arrays and using only String methods ( don't use String builder) // Question 17: In MS-DOS, a file name consists of up // to 8 characters (excluding '.', ':', backslask, '?', // and '*'), followed by an optional dot ('.' character) // and extension. The extension may contain zero to three // characters. For example, 1STFILE.TXT is a valid filename. // Filenames are case-blind. // // Write and test a method that takes // in a String, validates it as a valid MS-DOS file // name, appends the extensions ".TXT" if no extension // is given (that is, no '.' appears in FILENAME), converts // the name to uppercase, and returns the resulting string // to the calling method // If fileName ends with a dot, remove that dot and do not // append the default extension. If the name is invalid, // validFileName should return null.

C++ PLEASE!! // FILE: simplestring.h// CLASS PROVIDED: string (a sequence of characters)//// CONSTRUCTOR for the string class:// string(const char str[ ] = "") -- default argument is the empty string.// Precondition: str is an ordinary null-terminated string.// Postcondition: The string contains the sequence of chars from str.//// CONSTANT MEMBER FUNCTIONS for the string class:// size_t length( ) const// Postcondition: The return value is the number of characters in the// string.//// char operator [ ](size_t position) const// Precondition: position < length( ).// Postcondition: The value returned is the character at the specified// position of the string. A string's positions start from 0 at the start// of the sequence and go up to length( )-1 at the right end.//// MODIFICATION MEMBER FUNCTIONS for the string class:// void operator +=(const string& addend)// Postcondition: addend has been catenated to the end of the string.//// void operator +=(const char addend[ ])//...

1. string color = "Yellow"; //What does this code do? a. declares a structure b. calls a function c. creates a character array d. creates an object 2. The strcmp function returns ____________________. a. 0 if the two strings are equal b. a negative value if the first argument is alphabetically less than the second c. a positive value if the first argument is alphabetically greater than the second d. all of a through c are true

True or False _(1) The expression n/3*(8+4) evaluates to 16 if n=4 ___(2) x is greater than both y and z can be written as the statement x>y&&z ; in Java. ___(3) In Java a string is automatically an object.

IN C++ Write code that: creates 3 integer values - one can be set to 0, the other two should NOT multiples of one another (for example 3 and 6, or 2 and 8) take you largest value and perform a modulus operation using the smaller (non zero) value as the divisor print out the result. create an alias for the string type call the alias "name" then create an instance of the "name" class and assign it a value using an appropriate cout statement - print out the value Please screenshot your input and output, as the format tends to get messed up. Thank you!

Please complete this program in C++ Please enusre that there is plenty of comments. PLENTY even if unessessary. Please include screenshots of actual code, screenshots of output, and code in the browser so I can copy and paste. Thank you.

JAVA PPROGRAM ASAP Please create this program ASAP BECAUSE IT IS MY LAB ASSIGNMENT #2 so it passes all the test cases. The program must pass the test case when uploaded to Hypergrade. Chapter 9. PC #8. 8. Sum of Numbers in a String (page 610) Write a program that asks the user to enter a series of numbers separated by commas. Here are two examples of valid input: 7,9,10,2,18,6 8.777,10.9,11,2.2,-18,6 The program should calculate and display the sum of all the numbers. Input Validation 1. Make sure the string only contains numbers and commas (valid symbols are '0'-'9', '-', '.', and ','). 2. If the string is empty, a messages should be displayed, saying that the string is empty. Test Case 1 Enter a series of numbers separated only by commas or type QUIT to exit:\n7,9,10,2,18,6ENTERThe sum of those numbers is 52.00\nEnter a series of numbers separated only by commas or type QUIT to exit:\nENTEREmpty string.\nEnter a series of numbers separated only by...

Given code line, std::string un_address = "405 East 42nd Street, New York, NY, 10017"; Fill in the blanks: 17 std::stoi(un_address) returns std::stoi (un_address.substr( std::stoi (un_address.substr(un_address.find("1"))) J 20)) returns 42 returns

Suppose a teacher has five students who have taken four tests. The teacher uses the following grading scales to assign a letter grade to a student, based on the average of his or her four test scores. Test Score Letter Grade 90-100 80-89 70-79 60-69 0-59 A B C D F Create an application that uses an array of strings to hold the five student names, an array of five strings to hold each student's letter grades, and five arrays of four single precision numbers to hold each student's set of test scores.

Java please Line is a String object that holds an unknown number of int values separated by spaces. Write a segment of code that computes and displays the sum of the values in line.