C语言打印空心倒直角三角形星型图案程序

编写一个C语言程序，使用for循环打印空心倒直角三角形星型图案。

#include<stdio.h>
int main()
{
 	int i, j, rows; 
 	printf("Enter Hollow Inverted Right Triangle Rows =  ");
 	scanf("%d", &rows);

    printf("Hollow Inverted Right Triangle Star Pattern\n");
	for(i = rows; i > 0; i--)
	{
        if(i == 1 || i == rows)
        {
            for(j = 1; j <= i; j++)
            {
                printf("*");
            }
        }
        else
        {
            for(j = 1; j <= i; j++)
            {
                if(j == 1 || j == i)
                {
                    printf("*");
                }
                else
                {
                    printf(" ");
                }
            }
        }   
		printf("\n");
	}
 	return 0;
}

本C语言程序使用while循环打印空心倒直角三角形图案。它允许输入符号来打印空心倒三角形图案。

#include<stdio.h>
int main()
{
 	int i, j, rows; 
    char ch;
    
    printf("Symbol to Print Hollow Inverted Right Triangle =  ");
    scanf("%c", & ch);

 	printf("Enter Hollow Inverted Right Triangle Rows =  ");
 	scanf("%d", &rows);

    printf("Hollow Inverted Right Triangle Star Pattern\n");
    i = rows;
	while(i > 0)
	{
        if(i == 1 || i == rows)
        {
            j = 1;
            while(j <= i)
            {
                printf("%c", ch);
                j++;
            }
        }
        else
        {
            j = 1;
            while( j <= i)
            {
                if(j == 1 || j == i)
                {
                    printf("%c", ch);
                }
                else
                {
                    printf(" ");
                }
                j++;
            }
        }   
		printf("\n");
        i--;
	}
 	return 0;
}

Symbol to Print Hollow Inverted Right Triangle =  $
Enter Hollow Inverted Right Triangle Rows =  9
Hollow Inverted Right Triangle Star Pattern
$$$$$$$$$
$      $
$     $
$    $
$   $
$  $
$ $
$$
$