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

1. C / ANSI-C
2. Data Type
3. Char Validation

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;
}

           
       

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