2-3.cpp

Accelerted cpp 第二章答案 一本很好的cpp入门书

#include<iostream>
#include<string>

using std::endl;using std::string;
using std::cin; using std::cout;

int main()
{
cout<<"Please enter your name:";
string name;
cin>>name;
cout<<"Please enter the space you want to separate the greeting from the frame:";
int pad;//设定框架的空白处
cin>>pad;
cout<<endl;

const string greeting = "Hello," + name + '!';//问候语字符串

const int rows = pad * 2 + 3;//输出的行数

const string::size_type col = greeting.size() + pad * 2 + 2;
cout<<endl;//输出空行隔开 

for(int r = 0;r != rows;r++){

string::size_type c = 0;

while (c != col){
	if(r == pad + 1 && c == pad + 1){
	cout<<greeting;
	c += greeting.size();
	} else { 
		if (c == 0 || r == 0 || c == col - 1 || r == rows - 1)
			cout<<'*';
      		else
			cout<<' ';
		++c;
		}
	}	
      	cout<<endl;
    }  
return 0;
}