3_15.cpp

用c++编程 * *** ***** *** * ***** *

#include<iostream.h>
void main()
{
	const char star='*';
	const char brank=' ';
	int i,j;
	for(i=1;i<=4;i++)
	{	
	for(j=1;j<=4-i;j++)
		cout<<brank;
	for(j=1;j<=2*i-1;j++)
		cout<<star;
	cout<<endl;
	}
	for(i=5;i<=7;i++)
	{	
	for(j=1;j<=i-4;j++)
		cout<<brank;
	for(j=1;j<=-2*i+15;j++)
		cout<<star;
	cout<<endl;
	}
}