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What are advantages and disadvantages of Design patterns?
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Answer Posted / paul
The advantages are that design patterns are solutions to repetitive problems in object orientated programming (solutions that can be re-used over and over and applied to different areas and different problems). They are templates for you to base your solutions on.
Disadvantages are picking the correct design pattern and understanding how to implement that pattern to your scenario and knowing what to name your classes, so as to make it clearer for future programmers.
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write a program that reads in a file and counts the number of lines, words, and characters. Your program should ask the user to input a filename. Open the file and report an error if the file does not exist or cannot be opened for some other reason. Then read in the contents of the file and count the number of lines, words, and characters in the file. Also print additional information about the file, such as the longest and shortest words, and longest and shortest lines. For simplicity, we define a word to be one or more characters ending with white space (a space, tab, carriage return, etc.). Functions for checking the types of characters can be found in the ctype.h header file, so you want to include this header file in your program. For example, the sentence below could be all that is in a file. This sentence IT 104 is taught in C++. has 32 characters, one line, and six words. The shortest line is 32 characters. The longest line is 32 characters. The shortest word is 2 characters. The longest word is 6 characters
