3177 - 打印树（图形）

no input needed

     *
    ***
   *****
  *******
 *********
    ***
    ***
    ***
    ***

Solution C++

#include<bits/stdc++.h>
using namespace std;
int n;
int main()
{
	cout<<"     *"<<endl;
	cout<<"    ***"<<endl;
	cout<<"   *****"<<endl;
	cout<<"  *******"<<endl;
	cout<<" *********"<<endl;
	cout<<"    ***"<<endl;
	cout<<"    ***"<<endl;
	cout<<"    ***"<<endl;
	cout<<"    ***"<<endl;
	return 0;
}