#include <stdio.h>struct ST {??? int data;??? //......};struct NestST {??? struct InnerST {??????? int iData;??? };??? 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.iData,st3.data);??? printf("st4.iData=%d\n",st4.iData);??? return 0;}這段代碼為什么在c編譯器上沒問題，在c++上就有問題呢？謝謝回答。。