do-while()用法

do-while()循环适合于运用在交互程序中，

 

d0-while()循环妙用
 do
 {          int val1,val2;
     cout<<"please enter  two values";
     cin>>val1>>val2;
     cout<<"The sum of "<<val1<<"and"<<val2
         <<"="<<val1+val2<<"\n\n\n"
         <<"More ? [yes][no]";
     cin>>rsp;

 }while(!rsp.empty()&&rsp[0]!='n');