【C语言基础】结构体数组的易错问题

今天在学习结构体数组的时候，自己写了一份代码

#include <stdio.h>

struct Student {
    //年龄
    char *name;
    //编号
    char *id;
    //年龄
    unsigned age;
};

int main(){
    struct Student students[100] = {
        {"小明","15061",11},
        {"小红","15062",11},
        {"小童","15063",10}
    };
    
    for (int i = 0; i<sizeof(students)/sizeof(Student); i++) {
        printf("%s\t%s\t%d\n",students[i].name,students[i].id,students[i].age);
    }
    return 0;
}
           

编译时提示了以下错误

a.c:19:47: error: use of undeclared identifier 'Student'; did you mean
      'students'?
    for (int i = 0; i<sizeof(students)/sizeof(Student); i++) {
                                              ^~~~~~~
                                              students
a.c:13:20: note: 'students' declared here
    struct Student students[100] = {
           

后来找啊找找啊找，找到大脑瞬间爆炸，发现是因为sizeof这个函数在获取结构体类型大小时，需要在结构体名前加上 struct 修饰，

所以正确的代码应该为：

#include <stdio.h>

struct Student {
    //年龄
    char *name;
    //编号
    char *id;
    //年龄
    unsigned age;
};

int main(){
    struct Student students[100] = {
        {"小明","15061",11},
        {"小红","15062",11},
        {"小童","15063",10}
    };
    
    for (int i = 0; i<sizeof(students)/sizeof(struct Student); i++) {
        printf("%s\t%s\t%d\n",students[i].name,students[i].id,students[i].age);
    }
    return 0;
}