我一直在研究学生目录,该目录使用列表类型结构和结构数组跟踪学生的信息(姓名,ID,地址,课程名称等),而不使用动态内存分配。下面是我的三个结构和一个函数原型:
struct listType
{
studentType studentList[100]; //Array of Struct studentType
int listLength; //Keep track of the number of contacts in the Directory
}studentDir;
typedef struct studentInfo
{
char firstName[100];
char lastName[100];
char ID[100];
char address[50];
char phoneNumber[15];
char birthDate[15];
char startDate[15];
char endDate[15];
char GPA[10];
struct courseList;
}studentType;
struct courseList
{
char courseName[100];
char creditHours[100];
char grade[10];
};
void addStudent(struct listType dir);
问题在于,当我尝试访问struct' courseList'在结构中学生信息'在我的addContact函数中,我得到了一些编译器错误:
25 19 [警告]声明未声明任何[默认启用]
在功能' main':
46 2 [警告]内置函数的不兼容隐式声明' strcpy' [默认启用]
在功能' addContact':
145 59 [错误]' studentType'没有名为' courseList'
的成员147 59 [错误]' studentType'没有名为' courseList'
的成员这是函数定义:
void addContact(struct listType dir)
{
studentDir.listLength++;
printf("\nEnter the first name of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].firstName);
printf("\nEnter the last name of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].lastName);
printf("\nEnter the ID of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].ID);
printf("\nEnter the address of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].address);
printf("\nEnter the phone number of the contact (XXX-XXX-XXXX): ");
scanf("%s", studentDir.studentList[studentDir.listLength].phoneNumber);
printf("\nEnter the birthdate of the contact(MM/DD/YYYY): ");
scanf("%s", studentDir.studentList[studentDir.listLength].birthDate);
printf("\nEnter the start date of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].startDate);
printf("\nEnter the end date of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].endDate);
printf("\nEnter the GPA of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].GPA);
printf("\nEnter the course name of the contact: ");
scanf("%s", studentDir.studentList[studentDir.listLength].courseList.courseName);
printf("\nEnter the Enter the credit hours for this course: ");
scanf("%s", studentDir.studentList[studentDir.listLength].courseList.creditHours);
printf("\nEnter the Enter the grade for this course: ");
scanf("%s", studentDir.studentList[studentDir.listLength].courseList.grade;
}
我已经尝试在网上搜索了几个小时的解决方案,找不到与我的问题相关的内容,希望你们能告诉我哪里出错了,并帮我修复编译错误。
这里也是我的主要功能,以防它可能有所帮助(在交换机的其他情况下忽略函数调用,因为我暂时将它们取出):
int main()
{
int menuSelect;
do
{
printf("\n================================*\n");
printf("* [1]Add Sudent *\n");
printf("* [2]Search Student by name *\n");
printf("* [3]Search Student by ID *\n");
printf("* [4]Display all Student info *\n");
printf("* (5)Quit *\n");
printf("*=================================*\n");
printf("Select an option number from the menu: ");
scanf("%d", &menuSelect);
switch(menuSelect)
{
case 1:
addStudent(studentDir);
break;
case 2:
searchName(studentDir);
break;
case 3:
searchID(studentDir);
break;
case 4:
display(studentDir);
break;
case 5:
printf("\n\t\t\t\tThank you for using the Directory!");
system("pause");
break;
}
}while(menuSelect != 5);
return 0;
}
答案 0 :(得分:2)
您的struct studentInfo
不包含struct courseList
成员,因此错误。对于成员声明,您需要指定变量名称(例如struct courseList theList;
)。您的陈述struct courseList
本身并未声明成员。相反,它可能被解释为前向声明。
你的编译器应该给你一个相应的警告,比如gcc 4.8:
warning: declaration does not declare anything