c++ - 在嵌套结构中分配 const char* (c++)

Question

我正在尝试在嵌套结构中分配一个 const char* 值。我想将名字和名字分配给一个字符值，而不是一个字符串。这是我知道的更多 c，但我使用的是 C++。这是我的问题:

struct person {
    const char* name;
    const char* firstname;
};


struct person_struct {
    int pers_num;
    struct person* data;
};

// How does the assignment work?... i know this is wrong:
char name[100] = "Jason";
char firstname[100] = "Conner";
struct person_struct pers_info;
pers_info.pers_num = 1;
pers_info->data->name = new char[strlen(name)+1];
pers_info->data->firstname = new char[strlen(firstname)+1] 

非常感谢大家的帮助!!! :-)

[编辑:]

错误:

error: expected constructor, destructor, or type conversion before â.â token
error: expected constructor, destructor, or type conversion before â->â token
error: expected constructor, destructor, or type conversion before â->â token

Answer 1

strdup()将是一种方法(将其保留在纯 C 中)

当然首先你需要分配足够数量的person结构体

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

typedef struct person_ {
  const char* name;
  const char* firstname;
} person;

struct person_struct {
  int pers_num;
  person* data;
} PS;



int main(void) {
  char name[100] = "Jason";
  char firstname[100] = "Conner";

  PS.pers_num=1;
  // added cast here 
  PS.data = (person*)calloc(PS.pers_num, sizeof(person));
  PS.data[0].name = strdup(name);
  PS.data[0].firstname = strdup(firstname);

  puts(PS.data[0].name);
  puts(PS.data[0].firstname);

  return 0;
}