C Program to Print Left Arrow Numbers Pattern

Write a C program to print left arrow numbers pattern using for loop.

#include <stdio.h>

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

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

	printf("Printing Left Arrow Numbers Pattern\n");

	for (i = rows; i >= 1; i--)
	{
		for (j = i; j >= 1; j--)
		{
			printf("%d ", j);
		}
		printf("\n");
	}

	for (i = 2; i <= rows; i++)
	{
		for (j = i; j >= 1; j--)
		{
			printf("%d ", j);
		}
		printf("\n");
	}
}

This C example prints the left arrow of the pattern of the numbers using a while loop.

#include <stdio.h>

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

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

	printf("Printing Left Arrow Numbers Pattern\n");
	i = rows;

	while (i >= 1)
	{
		j = i;
		while (j >= 1)
		{
			printf("%d ", j);
			j--;
		}
		printf("\n");
		i--;
	}

	i = 2;
	while (i <= rows)
	{
		j = i;
		while (j >= 1)
		{
			printf("%d ", j);
			j--;
		}
		printf("\n");
		i++;
	}
}

Enter Left Arrow Number Pattern Rows = 11
Printing Left Arrow Numbers Pattern
11 10 9 8 7 6 5 4 3 2 1 
10 9 8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
8 7 6 5 4 3 2 1 
7 6 5 4 3 2 1 
6 5 4 3 2 1 
5 4 3 2 1 
4 3 2 1 
3 2 1 
2 1 
1 
2 1 
3 2 1 
4 3 2 1 
5 4 3 2 1 
6 5 4 3 2 1 
7 6 5 4 3 2 1 
8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
10 9 8 7 6 5 4 3 2 1 
11 10 9 8 7 6 5 4 3 2 1 

This C example uses the do while loop to print the left arrow pattern of numbers.

#include <stdio.h>

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

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

	printf("Printing Left Arrow Numbers Pattern\n");
	i = rows;

	do
	{
		j = i;
		do
		{
			printf("%d ", j);

		} while (--j >= 1);
		printf("\n");

	} while (--i >= 1);

	i = 2;
	do
	{
		j = i;
		do
		{
			printf("%d ", j);

		} while (--j >= 1);
		printf("\n");

	} while (++i <= rows);
}

Enter Left Arrow Number Pattern Rows = 13
Printing Left Arrow Numbers Pattern
13 12 11 10 9 8 7 6 5 4 3 2 1 
12 11 10 9 8 7 6 5 4 3 2 1 
11 10 9 8 7 6 5 4 3 2 1 
10 9 8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
8 7 6 5 4 3 2 1 
7 6 5 4 3 2 1 
6 5 4 3 2 1 
5 4 3 2 1 
4 3 2 1 
3 2 1 
2 1 
1 
2 1 
3 2 1 
4 3 2 1 
5 4 3 2 1 
6 5 4 3 2 1 
7 6 5 4 3 2 1 
8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
10 9 8 7 6 5 4 3 2 1 
11 10 9 8 7 6 5 4 3 2 1 
12 11 10 9 8 7 6 5 4 3 2 1 
13 12 11 10 9 8 7 6 5 4 3 2 1