In this section, you will learn how to convert a string value in to uppercase. In the given example, we have define a string in lowercase characters. Therefore, in order to convert the characters of string in uppercase (A to Z), we have used the library function toupper() provided by the header file <ctype.h>.
<ctype.h> - This header file is used for testing and converting characters.
Here is the code:
Output will be displayed as:
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