C.结构的动态阵列

Question

我正在尝试创建一个结构数组，但我不知道如何声明数组并对其进行mallocate

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define MAX_STRING 128
typedef char String[MAX_STRING]
typedef struct {
  String Name; //Name of the person                                             
  String Best; //Name of the best friend                                        
} Names;
int main(void) {
}

这是我正在尝试做的一个练习，最终产品应该是这样的：HERE

Answer 1

#include <stdlib.h>
#include <stdio.h>
#define N 3
typedef struct
{
    char* Name; //Why complicate things using a string?
    char* Best;
}Names;
int main(void)
{
    int i;
    //Create an array of pointers. 
    //Each element of the array is a pointer to a struct "Names"
    Names** data = malloc(N*sizeof(Names*));
    //data[i] is a array element which points to a single struct "Names".
    //Dynamically allocate memory for each struct
    for(i=0;i<N;i++)
    {
        data[i] = malloc(sizeof(Names));
    }
    //Rest is your assignment
    data[0]->Name = "aaaa";
    data[0]->Best = "bbbb";
    data[1]->Name = "cccc";
    data[1]->Best = "dddd";
    data[2]->Name = "eeee";
    data[2]->Best = "ffff";
    for(i=0;i<N;i++)
    {
        printf("%st%sn",data[i]->Name,data[i]->Best);
    }
}

Answer 2

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#define MAX_STRING 128
#define NUMBER_OF_STRUCTURES_IN_ARRAY 10
typedef char String[MAX_STRING]
typedef struct {
  String Name; //Name of the person                                             
  String Best; //Name of the best friend                                        
} Names;
int main(void) 
    {
    int rCode=0;
    Names *names_A = NULL;
    int    index;
    names_A = malloc(sizeof(*names_A) * NUMBER_OF_STRUCTURES_IN_ARRAY);
    if(NULL == names)
        {
        rCode=ENOMEM;
        fprintf(stderr, "Error: malloc() failedn");
        goto CLEANUP;
        }
     for(index=0; index < NUMBER_OF_STRUCTURES_IN_ARRAY; ++index)
         {
         strcpy(names_A[index].Name, "Some Name");
         strcpy(names_A[index].Best, "Another Name");
         }
CLEANUP:
if(names_A)
   free(names_A);
return(rCode);
}