9.03.2011

14. 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
                        21
                        321
                        4321
                        54321

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

/*************OUTPUT****************
Enter loop repeat number(rows): 5

                        1
                        21
                        321
                        4321
                        54321

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

4 comments:

  1. This trick is good but it can be solved by or simply so that a new program begineer can understand easily

    ReplyDelete
    Replies
    1. @Ankit,
      Share your knowledge, so beginner and expert improve his/her programming skills.

      Delete
  2. Wrong program ............Outer for loop should b ..................

    for(r=1; num<=r; r++)

    ReplyDelete
    Replies
    1. @Akash Singh,

      In above program, if we replace outer for loop condition as
      for(r=1; num<=r; r++)
      and num=5
      then when first time loop checking the condition as
      5<=1 ( i.e. num<=r )
      here condition false, so loop never executed or run, hence output of above program is nothing.

      Delete