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Count the Characters in WORDS

Write a program to read a string $str$, which will contain words separated with space. Your task is to count the length of each word and print it. The output should be comma separated string. Each string $str$ will begin with "@". The code stub provided **[here](https://pastebin.com/451HkRW9)** is to be used. It calls the function `countChar()`. Your task is to complete the function. #

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solution.cppC++17

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