move out c/cpp/py

cl/_testrt/struct/in.go

@@ -0,0 +1,25 @@
+package main
+
+import "C"
+import _ "unsafe"
+
+//go:linkname printf C.printf
+func printf(format *int8, __llgo_va_list ...any)
+
+type Foo struct {
+	A  C.int
+	ok bool
+}
+
+var format = [...]int8{'H', 'e', 'l', 'l', 'o', ' ', '%', 'd', '\n', 0}
+
+func (p Foo) Print() {
+	if p.ok {
+		printf(&format[0], p.A)
+	}
+}
+
+func main() {
+	foo := Foo{100, true}
+	foo.Print()
+}