C++ 打印右箭头数字图案程序

使用 for 循环编写一个 C++ 程序来打印右箭头数字图案。

#include<iostream>
using namespace std;

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

    cout << "Right Arrow Number Pattern\n"; 

    for(i = 1; i <= rows; i++)
    {
    	for(j = 1; j <= rows; j++)
		{
            if(j < i) {
                cout << " ";
            } 
            else {
                cout << j;
            }    
        }
        cout << "\n";
    }	

    for(i = 1; i < rows; i++)
    {
    	for(j = 1; j <= rows; j++)
		{
            if(j < rows - i) {
                cout << " ";
            } 
            else {
                cout << j;
            }
        }
        cout << "\n";
    }	
 	return 0;
}

这个 C++ 示例 使用 while 循环以右箭头图案打印数字。

#include<iostream>
using namespace std;

int main()
{
	int i = 1, j, rows;
     
    cout << "Enter Right Arrow Number Pattern Row = ";
    cin >> rows;

    cout << "Right Arrow Number Pattern\n"; 

    while(i <= rows)
    {
        j = 1;
    	while( j <= rows)
		{
            if(j < i) {
                cout << " ";
            } 
            else {
                cout << j;
            }    
            j++;
        }
        cout << "\n";
        i++;
    }	
    i = 1;
    while( i < rows)
    {
        j = 1;
    	while( j <= rows)
		{
            if(j < rows - i) {
                cout << " ";
            } 
            else {
                cout << j;
            }
            j++;
        }
        cout << "\n";
        i++;
    }	
 	return 0;
}

Enter Right Arrow Number Pattern Row = 9
Right Arrow Number Pattern
123456789
 23456789
  3456789
   456789
    56789
     6789
      789
       89
        9
       89
      789
     6789
    56789
   456789
  3456789
 23456789
123456789