converting chars to uppercase/lowercase

This is a discussion on converting chars to uppercase/lowercase within the C++ Programming forums, part of the General Programming Boards category; Argh!! I know there's a function for doing this but I can't remember what it is! Does anybody know it?...

  1. #1
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    converting chars to uppercase/lowercase

    Argh!! I know there's a function for doing this but I can't remember what it is! Does anybody know it?

  2. #2
    Used Registerer jdinger's Avatar
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    toupper() to convert to upper case.
    tolower() to convert to lower case.

  3. #3
    Just because ygfperson's Avatar
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    toupper(). (which is included in ctype.h)
    lowercase is tolower()

  4. #4
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    Or write your own. Write an array for a string, or if it's single don't. Then find the difference in ascii value for a and A, then convert to unsigned int, add to the other number, convert back to char. vice versa for the lowercase.

  5. #5
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    Also for future reference, there's list of all the common functions on this site. All the names are pretty descriptive - that should help a lot.

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