PROGRAMMING:Capitalize a word

This topic requires the preparation of procedures, input a line of characters, the first letter of each word changed to uppercase output. The so-called "word" refers to the continuous string without spaces. The words are separated by spaces, and the number of spaces can be multiple.
###Input format:
Enter to give a line of characters.
###Output format:
Output the entered characters on a single line, with all words capitalized.
###Input example:
```in
How are you?
```
###Output example:
```out
How Are You?
```







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