program to print triangle

Replies

• 

  disaster

  sorry the image is wrong
  
  123454321
  1234..4321
  123.....321
  12........21
  1...........1
• 

  silverscorpion

  I'll just give you the algorithm for now. try coding it yourself.. if you're not able to do it, let's see.
  It goes like this:
  
  Initialise 2 counters, let's say i and j.
  
  Use one for printing the numbers in a single line, and the other for the number of lines.
  
  Take care of the spaces in the lines. A simple thing to note is, if there are 'n' lines, then the k-th line has numbers from 1 to k-1, then 2*(k-1)-1 spaces, then numbers from k-1 to 1.
  
  this same algo should work for any pattern, that is, even if the first line is 1234567654321, you can do it by this algo. Just try it.
  
  Hope I'm clear..
• 

  safwan

  bROTHER , I ALSO WANT ALMOST THIS KIND OF PROGRAMM BUT I NEED A PYRAMID TO BE PRINTED SAME AS HERE HOW TO KEEP SPACE LOOK MY ONE PROJECT.
  
  ----*
  ---***
  --*****
  BUT MY ONE IS
  *
  **
  ***
  ****
  SO PROBLEM HERE IS SAME
  OF YOUR AND MINE CHECKE OUT MY CODE IN MY THERED PRINTING PYRAMID IN VB.
• 

  disaster

  silverscorpion

  I'll just give you the algorithm for now. try coding it yourself.. if you're not able to do it, let's see.
  It goes like this:
  
  Initialise 2 counters, let's say i and j.
  
  Use one for printing the numbers in a single line, and the other for the number of lines.
  
  Take care of the spaces in the lines. A simple thing to note is, if there are 'n' lines, then the k-th line has numbers from 1 to k-1, then 2*(k-1)-1 spaces, then numbers from k-1 to 1.
  
  this same algo should work for any pattern, that is, even if the first line is 1234567654321, you can do it by this algo. Just try it.
  
  Hope I'm clear..

  
  
  
  can u explain it more plzzz
  i am unable to get u.
• 

  shalini_goel14

  Hi disaster
  
  Have a look at following thread, if it can be of any help to you.
  #-Link-Snipped-#
  
  [Note: Just replace "*" with the counter value you want to print. It is not exactly what you want but logic is almost same.]
  
  You can try once. If an issues let me know.
• 

  cinu97

  disaster

  guys plz help me to write this progam
  
  123454321
  1234 4321
  123 321
  12 21
  
  the numbers must be printed in this form.😕

  
  /* #-Link-Snipped-# */
  #include
  int main()
  {
  int i,j,n;
  printf("Enter no");
  scanf("%d",&n);
  for(i=0;i {
  for(j=1;j<=n-i;j++)
  printf("%d",j);
  for(j=0;j<((i*2)-1);j++)
  printf("*");
  for(j=n-i;j>0;j--)
  {
  if(j==n)
  {
  }
  else
  printf("%d",j);
  }
  printf("\n");
  }}
• 

  PraveenKumar Purushothaman

  Guys, please refrain from posting EMail addresses in the public forums.
  
  Back to your question, it can be easily achieved by using two counters with a master counter, which counts less. And the same above code with some optimization.
  
  

  #include 
int main()
{
    int i, j, n;
    printf("Enter the number of Lines: ");
    scanf("%d", &n);
    for(i=0; i<n; i++)
    {
        for(j=1; j<=n-i; j++)
          printf("%d", j);
        for(j=0; j<((i*2)-1); j++)
          printf("*");
        for(j=n-i; j>0; j--)
          if(j!=n)
            printf("%d", j);
        printf("\n");
    }
}
• 

  andremartin

  Use one for printing the numbers in a single line, and the other for the number of lines.
  #-Link-Snipped-#