triangle.cc

资深C++讲师授课代码

#include <iostream>
using namespace std;

void printline(int height, int line)
{
	for(int j=1;j<=line;j++)
        cout << (j==1||j==line||line==height?" *":"  ");
	cout << endl;
}
void printspace(int count)
{
	for(int i=0; i<count; i++)
		cout << ' ';
}
int main()
{
	int n;
	cout << "input height: ";
	cin >> n;
	for(int i=1; i<=n; i++)
	{
		printspace(n-i);
		printline(n, i);
	}
}