How should you specify box sizes on a web page if you want the boxes to vary according to the font size of the text they contain? A. in pixels
B.
in inches
C.
as percentages
D.
in em units

Write a program that prompts the user to input a string. the program then uses the function substr to remove all the vowels from the string. for example, if str = "there", then after removing all the vowels, str = "thr". after removing all the vowels, output the string. your program must contain a function to remove all the vowels and a function to determine whether a character is a vowel.