C Programming Source Code

2 3 2

3 4 5 4 3

4 5 6 7 6 5 4

5 6 7 8 9 8 7 6 5

6 7 8 9 10 11 10 9 8 7 6

5 6 7 8 9 8 7 6 5

4 5 6 7 6 5 4

3 4 5 4 3

2 3 2

                              1

#include<stdio.h>
#include<conio.h>

void main()
{
   int i,j,n;
   clrscr();
   printf("Enter how many line you need to make pyramid = ");
   scanf("%d",&n);

   for(i=1;i<=n;i++)
   {
       for(j=1;j<=n-i;j++)
       printf("    ");
       for(j=i;j<=2*i-1;j++)
       printf("%4d",j);
       for(j=2*i-2;j>=i;j--)
       printf("%4d",j);
       printf("\n");
   }

   for(i=n-1;i>=1;i--)
   {
       for(j=1;j<=n-i;j++)
       printf("    ");
       for(j=i;j<=2*i-1;j++)
       printf("%4d",j);
       for(j=2*i-2;j>=i;j--)
       printf("%4d",j);
       printf("\n");
   }

   getch();
}

///////////////////////////////////////////////////////////////////////////
Copy & paste this code in your TC & run, then you will get output.......
If you have any problem please comment below.........