c - C 中的打印输出有问题

Question

我这里的程序打印不正确。这是输入:

有多少员工？ 2

输入员工 1 信息:月/日/年、年龄、高度、姓名:3/21/34, 43, 3.4, hdsfgdf

输入员工 2 信息:月/日/年、年龄、高度、姓名:4/44/44, 44, 6.2, dfgtesas

这是输出:

员工 1 信息:0/-1081689528/134514548, 16564212, 0.0, ��

员工 2 信息:0/1/14608664, -1217230008, 0.0, ��������

我唯一的猜测是我没有正确填充数组，或者我打印的是地址而不是数据。我这样假设对吗？任何一点建议都会有所帮助。太感谢了!

我的代码在 3 个文件中。

这是主要的:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "list.h"
#include "personal.c"

LIST *start, *end;

int main(void)
{
int i, numEmp;  

PERSON person;

start=end=NULL;
printf("How many employees? ");
    scanf("%d", &numEmp);
PERSON employees[numEmp];

for (i = 0; i < numEmp; i++)
{
printf("Enter employee %d info: month/day/year, age, height, name:\n", i+1);
scanf("%d/%d/%d,%d,%f,%s", &person.bday.month, &person.bday.day,
          &person.bday.year, &person.age, &person.height, person.name);
    add(&start, &end, person);

}
for (i = 0; i < numEmp; i++)
{
printf("Employee %d information:\n%d/%d/%d, %d, %.1f, %s\n", i+1, employees[i].bday.month, employees[i].bday.day, employees[i].bday.year, employees[i].age, employees[i].height, employees[i].name);

delete(&start, &end);
}

这是具有以下结构的列表:

#ifndef LIST_H_ /* to prevent re-definitions */
#define LIST_H_ /* that cause errors */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


typedef struct DATE
{
    int month;
    int day;
    int year;
} DATE;

typedef struct PERSON
{
    char name[41];
    int age;
    float height;
    DATE bday;

} PERSON;

typedef struct list 
{
PERSON data; 
struct list *next;
} LIST;

#endif

这就是我所有方法所在的地方:

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


int delete (LIST **head, LIST **tail){
    LIST *temp;

    if (*head == NULL)
        return -1;

    PERSON retVal = (*head)->data;

    if(*head==*tail){
        free(*head);
        *head=*tail=NULL;
    }
    else{
        temp=(*head)->next;
        free(*head);
        *head=temp;
    }

    //return retVal;
}

void add(LIST **head, LIST **tail, PERSON data){
    if(*tail==NULL){
        *head=*tail=(LIST *) malloc(sizeof(LIST));
        (*head)->data=data;//use arrow when struct is pointer. Use . if have direct access to struct
        (*head)->next=NULL;
    }
    else{
        (*tail)->next= (LIST *) malloc(sizeof(LIST));
        *tail=(*tail)->next;
        (*tail)->data=data;
        (*tail)->next=NULL;
    }
}

Answer 1

printf("Employee %d information:\n%d/%d/%d, %d, %.1f, %s\n", i+1, 
        employees[i].bday.month, employees[i].bday.day, employees[i].bday.year,
         employees[i].age, employees[i].height, employees[i].name);

您正在尝试打印从未初始化的 employees 数组。