Is a char alphanumeric : Char Validation « Data Type « C / ANSI-C

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C / ANSI-C » Data Type » Char ValidationScreenshots 
Is a char alphanumeric

#include <ctype.h>
#include <stdio.h>

int main(void)
{
  char ch;

  for(;;) {
    ch = getc(stdin);
    if(ch == '.'break;
    if(isalnum(ch)) printf("%c is alphanumeric\n", ch);
  }

  return 0;
}

           
       
Related examples in the same category
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4.Is it a digit
5.Is it printable: isgraph
6.Is it a lowercase char
7.Is it printable
8.Is a char punctuation
9.Is it a space char
10.Is it a uppercase char
11.is it a hexadecimal digit
12.Check a char: is it a letter
13.Check a char: is it a control letter
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