removing "can_print_it"

ex14.c

@@ -1,7 +1,6 @@
 #include <stdio.h>
 #include <ctype.h>
 
-int can_print_it(char ch);
 void print_letters(char arg[]);
 
 void print_arguments(int argc, char *argv[])
@@ -20,7 +19,7 @@ void print_letters(char arg[])
     for (i = 0; arg[i] != '\0'; i++) {
         char ch = arg[i];
 
-        if(can_print_it(ch)) {
+        if(isalpha(ch) || isblank(ch)) {
             printf("'%c' == %d ", ch, ch);
         }
     }
@@ -28,11 +27,6 @@ void print_letters(char arg[])
     printf("\n");
 }
 
-int can_print_it(char ch)
-{
-    return isalpha(ch) || isblank(ch);
-}
-
 int main(int argc, char *argv[])
 {
     print_arguments(argc, argv);