直接输出

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