C++ 程序打印左箭头星形图案

编写一个 C++ 程序，使用 for 循环打印左箭头星形图案。

#include<iostream>
using namespace std;

int main()
{
	int i, j, k, rows;
     
    cout << "Enter Left Arrow Star Pattern Row = ";
    cin >> rows;

    cout << "Left Arrow Star Pattern\n"; 

    for(i = 1; i <= rows; i++)
    {
    	for(j = 1; j <= rows - i; j++)
		{
            cout << " ";
        }
        for(k = i; k <= rows; k++)
        {
            cout << "*";
        }
        cout << "\n";
    }	

    for(i = 1; i < rows; i++)
    {
    	for(j = 0; j < i; j++)
		{
            cout << " ";
        }
        for(k = 0; k <= i; k++)
        {
            cout << "*";
        }
        cout << "\n";
    }
 	return 0;
}

这个 C++ 示例 使用 while 循环打印给定字符的左箭头图案。

#include<iostream>
using namespace std;

int main()
{
	int i, j, k, rows;
    char ch;
     
    cout << "Enter Left Arrow Star Pattern Row = ";
    cin >> rows;

    cout << "Enter Symbol for Left Arrow Pattern = ";
    cin >> ch;

    cout << "Left Arrow Star Pattern\n"; 

    i = 1;
    while( i <= rows)
    {
        j = 1;
    	while( j <= rows - i)
		{
            cout << " ";
            j++;
        }
        k = i;
        while( k <= rows)
        {
            cout << ch;
            k++;
        }
        cout << "\n";
        i++;
    }	

    i = 1;
    while( i < rows)
    {
        j = 0;
    	while( j < i)
		{
            cout << " ";
            j++;
        }
        k = 0;
        while( k <= i)
        {
            cout << ch;
            k++;
        }
        cout << "\n";
        i++;
    }
 	return 0;
}

Enter Left Arrow Star Pattern Row = 14
Enter Symbol for Left Arrow Pattern = %
Left Arrow Star Pattern
             %%%%%%%%%%%%%%
            %%%%%%%%%%%%%
           %%%%%%%%%%%%
          %%%%%%%%%%%
         %%%%%%%%%%
        %%%%%%%%%
       %%%%%%%%
      %%%%%%%
     %%%%%%
    %%%%%
   %%%%
  %%%
 %%
%
 %%
  %%%
   %%%%
    %%%%%
     %%%%%%
      %%%%%%%
       %%%%%%%%
        %%%%%%%%%
         %%%%%%%%%%
          %%%%%%%%%%%
           %%%%%%%%%%%%
            %%%%%%%%%%%%%
             %%%%%%%%%%%%%%