17. Design numbers tringle pyramid

Q. Write a program to generate a following numbers triangle:(Where user entered number through keyboard, for example if num=5)
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

Ans.
/*c program for number triangle pyramid*/

#include<stdio.h>
#include<conio.h>
int main()
{
 int num,r,c,sp,x;
 printf("Enter loop repeat number(rows):");
 scanf("%d",&num);
 for(r=1; num>=r; r++)
 {
   for(sp=num-r; sp>=1; sp--)
      printf(" ");
   for(c=1; c<=r; c++)
      printf("%d",c);
   for(x=r-1; x>=1; x--)
      printf("%d",x);
   printf("\n");
 }
 getch();
 return 0;
}
/****************OUTPUT***************
Enter loop repeat number(rows): 5

1






121




12321


1234321
123454321

**************************************/

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