C Language Nested Loops Set 19

Get the following output:

                    5 
               5 10
          5 10 15
     5 10 15 20
5 10 15 20 25
     5 10 15 20
          5 10 15
               5 10
                    5

Source code: Using for loop

#include<stdio.h>
int main()
{
	int i,j,k,n=5;
	for(i=1;i<=5;i++)
	{
		for(k=1;k<=n;k++)
		printf("   ");
		for(j=1;j<=i;j++)
		{
			printf("%d ",j*5);
		}
		printf("\n");
		n--;
	}
	n=2;
	for(i=4;i>=1;i--)
	{
		for(k=1;k<=n;k++)
		printf("   ");
		for(j=1;j<=i;j++)
		{
			printf("%d ",j*5);
		}
		printf("\n");
		n++;
	}
	return(0);
}

Source code: Using while loop

#include<stdio.h>
int main()
{
	int i=1,j,k,n=5;
	while(i<=5)
	{
		k=1;
		while(k<=n)
		{
			printf("   ");
			k++;
		}
		j=1;
		while(j<=i)
		{
			printf("%d ",j*5);
			j++;
		}
		printf("\n");
		i++;
		n--;
	}
	i=4;
	n=2;
	while(i>=1)
	{
		k=1;
		while(k<=n)
		{
			printf("   ");
			k++;
		}
		j=1;
		while(j<=i)
		{
			printf("%d ",j*5);
			j++;
		}
		printf("\n");
		i--;
		n++;
	}
	return(0);
}

Get the following output:

            1 1
         1 2 2 1
      1 2 3 3 2 1
   1 2 3 4 4  3 2 1
1 2 3 4 5 5 4 3 2 1

Source code: Using for loop

#include<stdio.h>
int main()
{
	int i,j,k,n=5;
	for(i=1;i<=5;i++)
	{
		for(k=1;k<=n;k++)
		printf("  ");
		//left
		for(j=1;j<=i;j++)
		{
			printf("%d ",j);
		}
		//right
		for(j=i;j>=1;j--)
		{
			printf("%d ",j);
		}
		printf("\n");
		n--;
	}
	
	return(0);
}

Source code: Using while loop

#include<stdio.h>
int main()
{
	int i=1,j,k,n=5;
	while(i<=5)
	{
		k=1;
		while(k<=n)
		{
			printf("  ");
			k++;
		}
		//left
		j=1;
		while(j<=i)
		{
			printf("%d ",j);
			j++;
		}
		//right
		j=i;
		while(j>=1)
		{
			printf("%d ",j);
			j--;
		}
		printf("\n");
		i++;
		n--;
	}
	
	return(0);
}

Get the following output:

            1
         1 2 1
      1 2 3 2 1
   1 2 3 4 3 2 1
1 2 3 4 5 4 3 2 1

Source code: Using for loop

#include<stdio.h>
int main()
{
	int i,j,k,n=5;
	for(i=1;i<=5;i++)
	{
		for(k=1;k<=n;k++)
		printf("  ");
		//left
		for(j=1;j<=i;j++)
		{
			printf("%d ",j);
		}
		//right
		for(j=i-1;j>=1;j--)
		{
			printf("%d ",j);
		}
		printf("\n");
		n--;
	}
	
	return(0);
}

Source code: Using while loop

#include<stdio.h>
int main()
{
	int i=1,j,k,n=5;
	while(i<=5)
	{
		k=1;
		while(k<=n)
		{
			printf("  ");
			k++;
		}
		//left
		j=1;
		while(j<=i)
		{
			printf("%d ",j);
			j++;
		}
		//right
		j=i-1;
		while(j>=1)
		{
			printf("%d ",j);
			j--;
		}
		printf("\n");
		i++;
		n--;
	}
	
	return(0);
}