C++使用正则表达式进行替换和遍历

#include
#include
using namespace std;

int main(){
	smatch results;
	string str="HyperWorks contains HyperMesh and HyperView and HyperStudy.";
	//string pat("Hyper[^ ]+[ |.]");
	string pat("Hyper.*.");
	regex r(pat);
	//for(sregex_iterator it(str.begin(),str.end(),r),end_it;it!=end_it;++it){
	//	cout<str()< 
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