用C++ 语言怎么写出这样一个程序?

include<iostream.h>
void main()
{
int i,j;
for(i=1;i<=5;i++)
for(j=1;j<i;j++)
{
cout<<"*"<<endl;
}
cout<<"\n"<<endl;
}

#include <iostream>
using namespace std;

int main()
{
const int HT = 5;
for(int i = 0; i < HT; ++i)
{
for(int j = 0; j <= i; ++j)
cout << "*";
cout << endl;
}
}

或：

#include <iostream>
using namespace std;

int main()
{
const int HT = 5;
for(int i = 0, j = 0; j < HT; ++i)
{
cout << "*";
if(i == j)
{
cout << endl;
++j;
i = -1;
}
}
}

你笨啊！看答案：
include<iostream.h>
void main()
{
int i,j;
for(i=1;i<=5;i++)
cout<<\"*\"<<