第10题

<img src="http://img.blog.csdn.net/20150419203928340?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvem91amlhaHVpMTIz/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />#include <iostream>#include <string>using namespace std;int main(){ string s1="week",s2="end";  cout<<"s1="<<s1<<endl;  cout<<"s2="<<s2<<endl;  s1=s1+s2;  cout<<"The new string is:"<<s1<<endl;  return 0;}