Question

c++结构体数组的定义问题

#include<iostream>using namespace std;struct st{ int num; char name[20]; char sex[4];}a[4];struct st a[1]={101404,"吴","女"};int main(){ cout<<"num:"<<a[1].num<<endl; cout<<"name:"<<a[1].name<<endl; cout<<"sex:"<<a[1].sex<<endl;}报错 error C2369: “a”: 重定义；不同的下标。什么原因；

Answer 1

struct st{ int num; char name[20]; char sex[4];}a[4]; //这儿定义了结构体数组astruct st a[1]={101404,"吴","女"}; /再次定义了a 。所以重定义了。去掉struct st

Answer 2

好像定义的结构体没有最后没有分号

Answer 3

注意：对结构体要么不要初始化，要么全部初始化。#include<iostream>
using namespace std;
struct st
{ int num;
char name[20];
char sex[4];
}a[4]={{1001,"刘","男"},{1002,"吴","女"},{1003,"温","男"},{1004,"张","男"}};int main()
{ cout<<"num:"<<a[1].num<<endl;
cout<<"name:"<<a[1].name<<endl;
cout<<"sex:"<<a[1].sex<<endl;
}