C++ 程序打印递增字母组成的直角三角形图案

编写一个 C++ 程序，使用 for 循环打印递增字母组成的直角三角形图案。

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Right Triangle of Incremented Characters Rows = ";
	cin >> rows;

	cout << "Right Triangle of Incremented Row Characters Pattern\n";
	int alphabet = 65;

	for (int i = 0; i <= rows - 1; i++)
	{
		for (int j = i; j >= 0; j--)
		{
			cout << char(alphabet + j) << " ";
		}
		cout << "\n";
	}
}

使用 while 循环的 C++ 程序打印递增字母组成的直角三角形字母图案。

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet;

	cout << "Enter Right Triangle of Incremented Characters Rows = ";
	cin >> rows;

	cout << "Right Triangle of Incremented Row Characters Pattern\n";

	alphabet = 65;

	i = 0;
	while (i <= rows - 1)
	{
		j = i;
		while (j >= 0)
		{
			cout << char(alphabet + j) << " ";
			j--;
		}
		cout << "\n";
		i++;
	}
}

Enter Right Triangle of Incremented Characters Rows = 13
Right Triangle of Incremented Row Characters Pattern
A 
B A 
C B A 
D C B A 
E D C B A 
F E D C B A 
G F E D C B A 
H G F E D C B A 
I H G F E D C B A 
J I H G F E D C B A 
K J I H G F E D C B A 
L K J I H G F E D C B A 
M L K J I H G F E D C B A 

这个示例使用 do while 循环显示了递增字母或升序组成的直角三角形图案。

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet;

	cout << "Enter Right Triangle of Incremented Characters Rows = ";
	cin >> rows;

	cout << "Right Triangle of Incremented Row Characters Pattern\n";

	alphabet = 65;

	i = 0;
	do
	{
		j = i;
		do
		{
			cout << char(alphabet + j) << " ";

		} while (--j >= 0);

		cout << "\n";

	} while (++i <= rows - 1);
}

Enter Right Triangle of Incremented Characters Rows = 16
Right Triangle of Incremented Row Characters Pattern
A 
B A 
C B A 
D C B A 
E D C B A 
F E D C B A 
G F E D C B A 
H G F E D C B A 
I H G F E D C B A 
J I H G F E D C B A 
K J I H G F E D C B A 
L K J I H G F E D C B A 
M L K J I H G F E D C B A 
N M L K J I H G F E D C B A 
O N M L K J I H G F E D C B A 
P O N M L K J I H G F E D C B A