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C library <ctype.h> header functions

Jun 22, 2023 · 2 min read · The <ctype.h> header file in the C programming language provides several functions to test and manipulate characters. Here are some of the most commonly used functions that are present in C Library ctype_h file: Exploring ctype library functions ...

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isalnum() function in C

Jun 21, 2023 · 1 min read · Using the isalnum() function in C The isalnum() function in C is used to check whether a character is alphanumeric. The function takes a character as input and returns a non-zero value if the character is alphanumeric, or zero if the character is not...

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C library <ctype.h> header functions

isalnum() function in C