Lowercase to Uppercase Convener
Write a program that lets the user enter a string into a character array. The program should then convert all the lowercase letters to uppercase. (If a character is already uppercase, or is not a letter, it should be left alone.) Hint: Consult the ASCII chart in Appendix B. Notice that the lowercase letters are represented by the ASCII codes 97 through 122. If you subtract 32 from any lowercase character's ASCII code, it will yield the ASCII code of the uppercase equivalent.
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