相关疑难解决方法(0)

这是在C++中制作可变大小结构的最佳方法吗？我不想使用vector,因为初始化后长度不会改变.

struct Packet
{
    unsigned int bytelength;
    unsigned int data[];
};

Packet* CreatePacket(unsigned int length)
{
    Packet *output = (Packet*) malloc((length+1)*sizeof(unsigned int));
    output->bytelength = length;
    return output;
}

编辑:重命名变量名称和更改的代码更正确.

我之前发布过这个主题,但现在我有一个更具体的问题/问题.

这是我的代码:

#include <cstdlib>
#include <iostream>

typedef struct{
    unsigned int h;
    unsigned int b[];
    unsigned int t;
 } pkt;

 int main(){

    unsigned int* arr = (unsigned int*) malloc(sizeof(int) * 10);
    arr[0] = 0xafbb0000;
    arr[1] = 0xafbb0001;
    arr[2] = 0xafbb0011;
    arr[3] = 0xafbb0111;
    arr[4] = 0xafbb1111;
    arr[5] = 0xafbc0000;
    arr[6] = 0xafbc0001;
    arr[7] = 0xafbc0011;
    arr[8] = 0xafbc0111;
    arr[9] = 0xafbc1111;

    pkt* p = (pkt*) malloc(sizeof(int)*13);
    p->h = 0x0905006a;

    int counter;

这是我得到的(counter = 0; counter <10; counter ++)p-> b …