Question 5.17: Converting a String to Upper- or Lowercase You want to conve......

Use the upper or lower function as appropriate.

For example, to convert aBcDe to uppercase, you would use:

To convert it to lowercase, you would use:

Discussion

In common with most functions that manipulate a string in some way, upper and lower do not actually modify the string, but rather return a modified copy of the string.

For example, the following code returns a copy of the string s, but note how the original string is unchanged.

If you want to change the value of s to be all uppercase, then you need to do the following:

See Also

See Recipe 5.16 for replacing text within strings.