Web Reference: Jun 23, 2023 · The strupr ( ) function is used to converts a given string to uppercase. Syntax: char *strupr(char *str); Parameter: str: This represents the given string which we want to convert into uppercase. Returns: It returns the modified string obtained after converting the characters of the given string str to uppercase. Time Complexity: O (n) This strupr program will help you to understand how to write a program to convert the given string into the Upper case without using the built-in String Function. Mar 17, 2025 · When the strupr () function is used, all alphabetic characters in the string are transformed to uppercase, while non-alphabetic characters are left alone. The strupr (string) function returns string characters in uppercase. Let's see a simple example of strupr () function.
YouTube Excerpt: An overview of how to use strrchr()
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