如何在cgo中向c结构添加golang字符串

您的代码需要2个修复程序：

charchar*C.CStringC.free

以下是您的修复示例：

package main

// FIX: "char response" replaced with "char *response" below.
/*
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

typedef struct Point {
    int x, y;
} Point;

typedef struct Resp {
    char *response;
} Resp;
*/
import "C"
import (
    "fmt"
    "unsafe"
)

type CPoint struct {
    Point C.Point
    Resp  C.Resp
}

func main() {
    // FIX: Use CString to allocate a *C.char string.
    resp := C.CString("Hello World")
    
    point := CPoint{
        Point: C.Point{x: 1, y: 2},
        Resp:  C.Resp{response: resp},
    }
    fmt.Println(point)

    // Example of converting a C *char to a Go string:
    goResp := C.GoString(point.Resp)
    fmt.Println(goResp)

    // FIX: Release manually allocated string with free(3) when no longer needed. 
    C.free(unsafe.Pointer(resp))
}