This function is from thectype.hfile which needs to be included in the program. ctype.h - isalnum() function Example in C #include <stdio.h>#include <ctype.h>intmain(){// Defining the type of variables and initializing themchara='A';charb='@';// condition to prove that the value...
isalnum('\xdf') in default C locale returned 0 isalnum('\xdf') in ISO-8859-1 locale returned 1ReferencesC23 standard (ISO/IEC 9899:2024): 7.4.1.1 The isalnum function (p: TBD) C17 standard (ISO/IEC 9899:2018): 7.4.1.1 The isalnum function (p: 145) C11...