Yunlot/tests/C/aaaa.go

package C

/*
// C 标志io头文件，你也可以使用里面提供的函数
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define LEN 1024
void pri(){
	printf("Welcome to the C World!\n");
}
int add(int a,int b){
	return a+b;
}
char* Foo( char *input ) {
    char* res = malloc( LEN * sizeof( char ) );
    sprintf( res, "%s %s", input, "World!" );
    return res;
}
*/
import "C" // 切勿换行再写这个
import (
	"fmt"
	"unsafe"
)

func Getpri() {
	C.pri()
}
func GetAdd() {
	fmt.Println(C.add(2, 1))
}
func GetFoo(a string) {
	cs := C.CString(a)
	res := C.Foo(cs)
	str := C.GoString(res)
	C.free(unsafe.Pointer(cs))
	C.free(unsafe.Pointer(res))
	fmt.Println(str)
}
func main() {
	GetFoo("111")
}