Write a C++ function called first_alpha that takes three string parameters and returns the string that comes first alphabetically from among those three. You may assume that the strings are all lowercase.

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Write a C++ function called first_alpha that takes three string parameters and returns the string that comes first alphabetically from among those three. You may assume that the strings are all lowercase.

 

Expert Solution
Step 1

Algorithm:

1. Start

2. Initialize strings str1, str2, and str3

3. Compare str1 with str2 and str3

4. If str1 < str2 and str3, then return str1

5. Else, compare str2 with str1 and str3

6. If str2 < str1 and str3, then return str2

7. Else, compare str3 with str1 and str2

8. If str3 < str1 and str2, then return str3

9. Else, return "No string found!"

10. End

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