Go语言练习：go语言与C语言的交互——cgo

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(100)
fmt.Println("Random:", Random())
Hello()
}

$ go run cgo.go
Random: 677741240
Hello World !