2

在这个程序中,我想定义一个名为 person 的结构,以及一个插入函数,用于将元素插入到声明为 person 类型的数组中未使用的空间中。最后,我想将结果打印为标准输出。任何人都可以给我一个提示以纠正任何错误的事情吗?干杯

错误:

arrays.c:16:22: error: expected ')' before '[' token
arrays.c: In function 'main':
arrays.c:34:5: warning: implicit declaration of function 'insert'
arrays.c:41:5: warning: format '%s' expects type 'char *', but argument 2 has type 'char **'

代码

#include <stdio.h>

/* these arrays are just used to give the parameters to 'insert',
   to create the 'people' array */
char *names[7]= {"Simon", "Suzie", "Alfred", "Chip", "John", "Tim",
          "Harriet"};
int ages[7]= {22, 24, 106, 6, 18, 32, 24};


/* declare your struct for a person here */
typedef struct{
  char name;
  int ages; 
}  person;

static void insert (p[], char *name, int ages) {

  static int nextfreeplace = 0;
  /* put name and age into the next free place in the array parameter here */
  person p[0] = {&name, age};

  /* modify nextfreeplace here */
  nextfreeplace++;

}

int main(int argc, char **argv) {

  /* declare the people array here */
   person p[7];

   //insert the members and age into the unusage array. 
  for (int i=0; i < 7; i++) {
    insert (p[i], &names[i], ages[i]);
    p[i]= p[i+1];

  }

  /* print the people array here*/
  for (int i=0; i < 7; i++) {
    printf("%s is %d years old\n", &names[i], ages[i]);
  }

  return 0;
}
4

2 回答 2

3

第一个问题是你的结构人。您将 name 声明为char而它应该是char* (pointer)char[] (array)

typedef struct 
{
    char *name; //or char name[100];
    int age;
}
person;

接下来,您的插入 函数的参数不正确。您不想要一个人员数组(您可以这样做,但这更简单),您需要一个指向 person 结构的指针,以便您可以编辑它。

static void insert(person *p, char *name, int age)
{
    p->name = name;
    p->age = age;
}

最后,这是填充数组并打印出来的方式:

int main()
{
    //names and ages...

    person people[7];

    for (int i = 0; i < 7; i++)
    {
        insert(&people[i], names[i], ages[i]);
    }

    for (int i = 0; i < 7; i++)
    {
        printf("name: %s, age: %i\n", people[i].name, people[i].age);
    }
}

示例:http: //ideone.com/dzGWId

于 2012-10-20T15:44:26.123 回答
2

你的参数有问题p

static void insert (p[], char *name, int ages)

您忘记了它的类型 ( person)。然后你重新声明它;以下指令无效:

person p[0] = {&name, age};

在函数调用中,你不使用数组,而是使用数组的case。所以你的功能应该是:

typedef struct
{
  char *name;
  int ages;
} person;

static void
insert (person *p, char *s, int n)
{
  p->name = s;
  p->ages = n;
}

和电话:

insert (&p[i], names[i], ages[i]);
于 2012-10-20T14:50:32.553 回答