C++程序改错求 大佬帮忙

Question

Answer 1

是这个意思吗？

#include<stdio.h>
struct ST{
    int data;
};
struct InnerST{
    int iData;
};
struct NestST{
    struct InnerST a;
    int data;
};
int main(){
    struct ST st1={15};
    struct NestST st3={25,35};
    struct InnerST st4={45};

    printf("st1.data=%d\n",st1.data);
    printf("st3.iData=%d,st3.data=%d\n",st3.a.iData,st3.data);
    printf("st4.iData=%d\n",st4.iData);

    return 0;
}