Computer Science Homework Help

Text justification is spacing of the text block so that both right and left side of the text have a straight edge. This is accomplished by adding spaces so that every line is exactly the same length. You are to implement simplified justification rules as follows. Every line should be exactly 80 characters long (keep this value in a named constant). To get to this line length, extra space is first added after punctuation marks. You need to consider only these marks: .,!?; That is, every punctuation mark may be followed by two spaces unless it is the last character in the line. If the spaces after punctuation marks are added and the line is still less than 80 characters, additional spaces are added after random words in the line. There is no need to ensure that the extra spaces are spread uniformly. Randomization is sufficient. A line that is shorter than 40 characters is considered the end of a paragraph is not justified. Hyphenation (breaking up of words) between lines is not required.

 Write a program that asks the user to input a string and then prints this string out in 80 characters according to the above justification rules. You may assume that the user always inputs the line that is less than 80 characters. Below is an example dialog:

input line: Contrary to popular belief, Lorem Ipsum is not simply random text. your line justified: Contrary to  popular belief,   Lorem Ipsum  is not   simply  random    text.

Hints: Use getline() function to get user input. See this example for its operation. To locate spaces and punctuation characters, consider this code. This code demonstrates how multiple occurrences of the same symbol may be found. String size() function determines the number of characters in a string. This code demonstrates string modification.

To randomly insert spaces, consider the following approach

continue until the string is justified    randomly pick a position between 0 and 80    locate the first white space following this position       (make sure it is not the end of the string)    insert a space there Use find_first_of(white space characters) to locate the white space following selected position.