C Program to Print Sandglass Number Pattern

C program to print sandglass number pattern; Through this tutorial, we will learn how to print sandglass number pattern using for loop and while loop in c programs.

Programs to Print Sandglass Number Pattern in C

• C Program to Print Sandglass Number Pattern using For Loop
• C Program to Print Sandglass Number Pattern using While Loop

C Program to Print Sandglass Number Pattern using For Loop

#include <stdio.h>

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

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

    printf("The Sandglass Number Pattern\n");

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

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

    return 0;
}

The output of the above c program; is as follows:

Enter Sandglass Number Pattern Rows = 5
The Sandglass Number Pattern
1 2 3 4 5
 2 3 4 5
  3 4 5
   4 5
    5
   4 5
  3 4 5
 2 3 4 5
1 2 3 4 5 

C Program to Print Sandglass Number Pattern using While Loop

#include <stdio.h>

int main()
{
    int i = 1, j, k, rows;

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

    printf("\nThe Sandglass Number Pattern\n");

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

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

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

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

    return 0;
}

The output of the above c program; is as follows:

Enter Sandglass Number Pattern Rows = 5
The Sandglass Number Pattern
1 2 3 4 5
 2 3 4 5
  3 4 5
   4 5
    5
   4 5
  3 4 5
 2 3 4 5
1 2 3 4 5 

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