expected ',' or ';' before struct

这个错误通常表示在定义结构体时出现了语法错误，可能是缺少了逗号或分号。请检查你的结构体定义语句，确保语法正确性。以下是一个可能导致该错误的示例代码：

struct Person {
    char *name
    int age;
    char *gender;
};

在这个示例中，缺少了第二个成员变量 `name` 后面的逗号，应该修改为：

struct Person {
    char *name;
    int age;
    char *gender;
};

或者是在成员变量 `name` 后面添加分号，也可以解决该错误：

struct Person {
    char *name;
    int age;
    char *gender;
} person;

如果无法确定错误的具体位置，请检查该结构体定义语句前面的代码，可能是在前面的代码中出现了语法错误，导致编译器无法正确解析结构体定义。

相关问题

[Error] expected expression before 'struct'

This error message is usually caused by a syntax error in your code. It means that the compiler was expecting to see an expression, such as a variable or a function call, but instead encountered the keyword "struct".

To resolve this error, you need to check your code for any syntax errors or typos that may be causing the problem. Make sure that any struct declarations are properly formatted and that you have used the correct syntax for calling functions or accessing variables.

For example, if you have defined a struct called "Person", you would need to use the following syntax to create a new instance of that struct:

struct Person p;

If you accidentally typed something like this instead:

Person p;

You would get the "expected expression before 'struct'" error message, because the compiler is expecting to see an expression (in this case, the struct declaration) before the variable name.

[Error] expected primary-expression before 'struct'

This error message typically occurs when the syntax of a C or C++ program is incorrect. Here are some common causes:

1. Missing semicolon: If you are using a struct declaration, make sure you end it with a semicolon. For example, the following code will produce the error message:

struct myStruct {
int a;
int b;
} // Missing semicolon here

To fix this, simply add a semicolon at the end of the struct declaration:

struct myStruct {
int a;
int b;
};

2. Incorrect use of struct keyword: If you are using the struct keyword to declare a variable, make sure you use it correctly. For example, the following code will produce the error message:

myStruct s; // Incorrect use of struct keyword

To fix this, add the struct keyword before the variable name:

struct myStruct s;

3. Incorrect use of typedef: If you are using typedef to define a new data type, make sure you use it correctly. For example, the following code will produce the error message:

typedef struct {
int a;
int b;
} myStruct // Missing semicolon here

To fix this, add a semicolon at the end of the typedef declaration:

typedef struct {
int a;
int b;
} myStruct;

By fixing these common mistakes, you should be able to resolve the "expected primary-expression before 'struct'" error message.