打印倒三角数字图案的C语言程序

编写一个C语言程序，使用for循环打印倒三角形数字图案。

#include <stdio.h

int main() { int rows;

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

printf("Printing Inverted Triangle Number Pattern\\n");

for (int i = 1; i <= rows; i++)
{
	for (int j = 1; j < i; j++)
	{
		printf(" ");
	}
	for (int k = 1; k <= rows - i + 1; k++)
	{
		printf("%d ", k);
	}
	printf("\\n");
}

这个C语言例子使用while循环显示数字的倒三角模式。

#include <stdio.h>.

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

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

printf("Printing Inverted Triangle Number Pattern\\n");
i = 1;

while (i <= rows)
{
	j = 1;
	while (j < i)
	{
		printf(" ");
		j++;
	}

	k = 1;
	while (k <= rows - i + 1)
	{
		printf("%d ", k);
		k++;
	}
	printf("\\n");
	i++;
}

Enter Inverted Triangle Number Pattern Rows = 9
Printing Inverted Triangle Number Pattern
1 2 3 4 5 6 7 8 9 
 1 2 3 4 5 6 7 8 
  1 2 3 4 5 6 7 
   1 2 3 4 5 6 
    1 2 3 4 5 
     1 2 3 4 
      1 2 3 
       1 2 
        1 

在这个C模式的例子中，我们用do while循环来显示倒三角的数字。

#include <stdio.h>.

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

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

printf("Printing Inverted Triangle Number Pattern\\n");
i = 1;

do
{
	j = 1;
	do
	{
		printf(" ");

	} while (j++ < i);

	k = 1;
	do
	{
		printf("%d ", k);

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

	printf("\\n");

} while (++i <= rows);

Enter Inverted Triangle Number Pattern Rows = 6
Printing Inverted Triangle Number Pattern
 1 2 3 4 5 6 
  1 2 3 4 5 
   1 2 3 4 
    1 2 3 
     1 2 
      1