Number rhombus

Q.  Write a C program to print following number rhombus. 

      1
     121
    12321
   1234321
  123454321
   1234321
    12321
     121
      1


Ans.


/*c program for number rhombus structure*/

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

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

 The output of above program would be:

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

Figure: Screen shot of Number rhombus C program

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