#include stdio.h#include ctype.hint main () {char var1[] = tuts;char var2[] = 0xE;

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#include <stdio.h>
#include <ctype.h>

int main () {
   char var1[] = "tuts";
   char var2[] = "0xE";

   if( isxdigit(var1[0]) ) {
      printf("var1 = |%s| is hexadecimal character\n", var1 );
   } else {
      printf("var1 = |%s| is not hexadecimal character\n", var1 );
   }

   if( isxdigit(var2[0] )) {
      printf("var2 = |%s| is hexadecimal character\n", var2 );
   } else {
      printf("var2 = |%s| is not hexadecimal character\n", var2 );
   }

   return(0);
}