Write a function isAlpha() that accepts a string as a parameter and returns true if all of the characters of the string parameter are English alphabet characters (Hint: in ASCII table the alphabetic characters have codes in range 65-90 and 97-122). Spaces (ASCII code: 32) should be ignored. Test your function

USING C++ Please fix the errors in the code (image attached) with the failed test warning (image attached). Thank you! Write a program that removes all non-alphabetic characters from the given input. Ex: If the input is: -Hello, 1 world$! the output is: Helloworld Your program must define and call the following function that takes a string as a parameter and returns the string without any non-alphabetic characters.string RemoveNonAlpha(string userString)

Write a function called isValidLength that takes an integer number and returns true if the number has a valid length and false otherwise. Valid- length is determined by finding number length. If the length is at least 3 digits and at most 5 digits, then the number has a valid length. For example, the number 324 is valid because it's 3 digits long and the number 22 is invalid because it’s 2 digits long.

Write a program that inputs a student's name in the following form: lastName, firstName middleName. The program will convert the name to the following form: firstName middleName lastName. Your program must read the student's entire name in one variable and must consist of a user-defined function that takes as input a string, consisting of a student's name, and returns the string consisting of the altered name. You can use the string function find to find the index of ,(the comma); the function  length to find the length of the string; and the function substr to extract the firstName, middleName, and lastName.

Write a program to enter two strings from the user using function cin.getline and then appends string two with string one separated by a blank space. Sample Input: C++ is a good programming Language. Arrays are very integral part of this language. Sample Output: C++ is a good programming Language. Arrays are very integral part of this language.

Write a function sum(x,y) that returns a string indicating what the sum of x and y is. For example, when x=3 and y=17 your function should return the string 'The sum of 3 and 17 is 20.'