Super simple and informative exmple of using CGO

## gistfile1.go
package main

// #include <ctype.h>
import "C"
import "log"

func main() {
  for i := 32; i<126; i=i+1 {
		log.Printf( "'%s' (%3d) isalpha: \t%d", string(byte(i)), i, C.isalpha(C.int(i)) )
	}
}
	package main

	// #include <ctype.h>
	import "C"
	import "log"

	func main() {
	for i := 32; i<126; i=i+1 {
	log.Printf( "'%s' (%3d) isalpha: \t%d", string(byte(i)), i, C.isalpha(C.int(i)) )
	}
	}