Even and odd places in a word

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Take a string input and print it in such a way that even places of every word present in that string should be in lower case and other in upper case. ###Input: - The single line contains input string ###Output: - The single line contains output string ###Constraints - $5 \leq length of input string \leq 20$ ###Sample Input: I am best ###Sample Output: I Am BeSt

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solution.cppC++17

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