Question

What header file must you include in a program using the character conversion functions toupper and tolower? 

   What header file must you include in a program using the character conversion functions toupper and tolower?
Starting out with C++: From Control Structures through Objects
Starting out with C++: From Control Structures through Objects
Tony Gaddis 10th Edition
Chapter 10, Problem 2 ↓

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Step 1: Identify the functions you need to use in your program, which are `toupper` and `tolower`.  Show more…

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What header file must you include in a program using the character conversion functions toupper and tolower?
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