C++ 打印倒直角三角形字母图案程序

编写一个C++程序，使用for循环打印倒直角三角形字母图案。

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Inverted Right Triangle of Alphabets Rows = ";
	cin >> rows;

	cout << "Printing Inverted Right Triangle Alphabets Pattern\n";
	int alphabet = 65;

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

使用while循环打印倒直角三角形字母图案的C++程序。

#include<iostream>
using namespace std;

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

	cout << "Enter Inverted Right Triangle of Alphabets Rows = ";
	cin >> rows;

	cout << "Printing Inverted Right Triangle Alphabets Pattern\n";
	alphabet = 65;

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

Enter Inverted Right Triangle of Alphabets Rows = 14
Printing Inverted Right Triangle Alphabets Pattern
ABCDEFGHIJKLMN
ABCDEFGHIJKLM
ABCDEFGHIJKL
ABCDEFGHIJK
ABCDEFGHIJ
ABCDEFGHI
ABCDEFGH
ABCDEFG
ABCDEF
ABCDE
ABCD
ABC
AB
A

这个C++示例使用do while循环打印倒直角三角形字母图案。

#include<iostream>
using namespace std;

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

	cout << "Enter Inverted Right Triangle of Alphabets Rows = ";
	cin >> rows;

	cout << "Printing Inverted Right Triangle Alphabets Pattern\n";
	alphabet = 65;

	i = rows - 1;
	do
	{
		j = 0;
		do
		{
			cout << char(alphabet + j);

		} while (++j <= i);
		cout << "\n";

	} while (--i >= 0);
}

Enter Inverted Right Triangle of Alphabets Rows = 17
Printing Inverted Right Triangle Alphabets Pattern
ABCDEFGHIJKLMNOPQ
ABCDEFGHIJKLMNOP
ABCDEFGHIJKLMNO
ABCDEFGHIJKLMN
ABCDEFGHIJKLM
ABCDEFGHIJKL
ABCDEFGHIJK
ABCDEFGHIJ
ABCDEFGHI
ABCDEFGH
ABCDEFG
ABCDEF
ABCDE
ABCD
ABC
AB
A