C++小练习：输出特殊图形

1.输出

#include<iostream>
using namespace std;
int main()
{
	for (int row=1;row<=4;row++)
	{
		for (int k = 1;k<row;k++)
		{
			cout << " ";
		}
		for (int i = 1;i <= row;i++)
		{
			cout << "#";
		}
		
		for (int j=1;j<=16-4*row;j++)
		{
			cout << " ";
		}
		for (int i = 1;i <= row;i++)
		{
			cout << "#";
		}
		cout << endl;
	}
	for (int row = 1;row <= 4;row++)
	{

		
		for (int k = 1;k<=4-row;k++)
		{
			cout << " ";
		}
		for (int i = 1;i <=5-row;i++)
		{
			cout << "#";
		}
		for (int j=1;j<=row*4-4;j++)
		{
			cout << " ";
		}
		for (int i = 1;i <= 5-row;i++)
		{
			cout << "#";
		}

		cout << endl;
	}
	system("pause");
	return 0;
}

2.输出

#include<iostream>
using namespace std;
int main()
{
	for (int j=0;j<4;j++)
	{
		/*for (int k=0;k<=j;k++)
		{
			cout << " ";
		}*/
		for (int i =0;i < 8-2*j;i++)
		{
			cout << "#";
		}
		cout << endl;
	}
	system("pause");
	return 0;
}

3.输出

#include<iostream>
using namespace std;
int main()
{
	for (int j=0;j<4;j++)
	{
		for (int k=0;k<=j;k++)
		{
			cout << " ";
		}
		for (int i =0;i < 8-2*j;i++)
		{
			cout << "#";
		}
		cout << endl;
	}
	system("pause");
	return 0;
}

4.输出

#include<iostream>
using namespace std;
int main()
{
	for (int j=0;j<3;j++)
	{
		for (int i=0;i<j+1;i++)
		{
			cout << "#";
		}
		cout << endl;
	}
	for (int j=0;j<4;j++)
	{
		for (int i = 0;i < 4-j;i++)
		{
			cout << "#";

		}
		cout << endl;
	}
	system("pause");
	return 0;
}

最后

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