几种图形打印基于C++IO流操作

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1.
* *
** **
*****

2.
*
**
***
****
***
**
*

3.金字塔

/*
打印
* *
** **
*****
上面图形
*/

#include<iostream>
using namespace std;
void print(int high)
{
int i=1,j;
while(i<=high)
{
cout.setf(ios::left);
cout.width(i);
cout.fill('*');
cout<<"";
cout.unsetf(ios::left);

cout.width(2*high-1-2*i);
cout.fill(' ');
cout<<"";

cout.setf(ios::right);
if(i!=high) j=i;
else j=i-1;
cout.width(j);
cout.fill('*');
cout<<"";
cout.unsetf(ios::right);
i++;
cout<<endl;
}

}

int main()
{
cout<<"请输入一个整形值:";
int high;
cin>>high;
print(high);
return 0;
}

=================================================

/*
*
**
***
****
***
**
*
*/

#include<iostream>
using namespace std;

void print(int width)
{
int i=1;
while(i<=width)
{

cout.setf(ios::left);
cout.width(i);
cout.fill('*');
cout<<"";
cout<<endl;
i++;
}
i-=2;
while(i>=1)
{

cout.setf(ios::left);
cout.width(i);
cout.fill('*');
cout<<"";
cout<<endl;
i--;
}
}
int main()
{
cout<<"请输入一个整形值:";
int width;
cin>>width;
print(width);
return 0;

}

==================================================

#include<iostream>
using namespace std;
/*width,fill*/
void print(int high)
{
int i;
for(i=1;i<=high;i++)
{
cout.width(high-i);
cout.fill(' ');
cout<<"";//当为空时，填充字符
cout.width(2*i-1);
cout.fill('*');
cout<<"";
cout<<endl;
}

}

int main()
{
int iHeight;
cout<<"请输入高度:";
cin>>iHeight;
print(iHeight);
return 0;
}

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