2-4.cpp

Accelerated C++ 课后练习题 本人自己完成、可供参考

#include<iostream>
#include<string>
using std::cin;
using std::cout;
using std::endl;
using std::string;
int main()
{
	cout<<"Please enter your first name: ";
	string name;
	cin>>name;
	const string greeting="Hello, "+name+"!";
	
    int pad;
	cout<<"Please enter pad: ";
	cin>>pad;
	
	const int rows=pad*2+3;
	const int mid=rows/2;
	const string::size_type cols=greeting.size()+pad*2;
	cout<<endl;

	for(int r=0;r!=rows;++r)
	{
		if(r==mid)
		{
			const string temp(pad,' ');
			cout<<"*"<<temp<<greeting<<temp<<"*"<<endl;
		}
		else if(r==0||r==rows-1)
		{
			const string first(cols,'*');
			cout<<"*"<<first<<"*"<<endl;
		}
		else 
		{
			const string second(cols,' ');
			cout<<"*"<<second<<"*"<<endl;
		}
		
	}

	return 0;
}