Some Programs On Nesting Of For Loops

Here are some programs on nesting of for loops.

Printing 1 1,2 1,2,3 1,2,3,4 1,2,3,4,5 ...n

where value of n is 5 taken from keyboard by me

#include<stdio.h>;
void main()
{
	int i,j,n;
	printf("Enter a number : n");
	scanf("%d",&n);
       for (i=1;i<=n;i++)
	  {

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

Printing 1 2,2 3,3,3 4,4,4,4 5,5,5,5,5 ...n

where value of n is 5 taken from keyboard by me

#include<stdio.h>;
void main()
{
	int i,j,n;
	printf("Enter a number : n");
	scanf("%d",&n);
       for (i=1;i<=n;i++)
	  {

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

Printing 5 4,5 3,4,5 2,3,4,5 1,2,3,4,5

where value of n is 5 taken from keyboard by me

#include<stdio.h>;
void main()
{
	int i,j,n;
	printf("Enter a number : n");
	scanf("%d",&n);
       for ( i = n ; i >;= 1 ; i-- )
	  {

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