Question

How to check whether or not each character in a wide string is alphanumeric in C

Answer 1

#include <stdio.h>
#include <wchar.h>

int main(void)
{
    wchar_t str[] = L"C 17 Programming!";

    int i = 0;
    while (str[i]) {
        if (iswalnum(str[i])) 
            wprintf(L"%lc is an alphanumeric\n", str[i]);
        else  
            wprintf(L"%lc is not an alphanumeric\n", str[i]);
        i++;
    }

    return 0;
}





/*
run:

C is an alphanumeric
  is not an alphanumeric
1 is an alphanumeric
7 is an alphanumeric
  is not an alphanumeric
P is an alphanumeric
r is an alphanumeric
o is an alphanumeric
g is an alphanumeric
r is an alphanumeric
a is an alphanumeric
m is an alphanumeric
m is an alphanumeric
i is an alphanumeric
n is an alphanumeric
g is an alphanumeric
! is not an alphanumeric

*/

 

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