3177 - 打印树（图形）
如题
题目输入
题目输出
输入/输出样例
题目输入
no input needed
题目输出
*
***
*****
*******
*********
***
***
***
***
C++解答
#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; }