Go语言练习：go语言与C语言的交互——cgo

1、代码

 package main
 
 import "fmt"
 /*
 #include <stdlib.h>
 #include <stdio.h>
 void hello()
 {
     printf("Hello World !\n");
 }
 */
 import "C"
 
 func Hello() {
     C.hello();
 }
 
 func Random() int {
     return int(C.random())
 }
 
 func Seed(i int) {
     C.srandom(C.uint(i))
 }
 
 func main () {
     Seed()
     fmt.Println("Random:", Random())
     Hello()
 }

2、运行结果

$ go run cgo.go
Random:
Hello World !