disaster
Branch Unspecified
28 Jul 2011

# program to print triangle

guys plz help me to write this progam

123454321
1234 4321
123 321
12 21

the numbers must be printed in this form.😕

disaster

Branch Unspecified
10 years ago
sorry the image is wrong

123454321
1234..4321
123.....321
12........21
1...........1

silverscorpion

Branch Unspecified
10 years ago
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

Branch Unspecified
10 years ago
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

Branch Unspecified
10 years ago
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

Branch Unspecified
10 years ago
Hi disaster

Have a look at following thread, if it can be of any help to you.
https://www.crazyengineers.com/forum/computer-science-engineering/12974-printing-pyramid-vb.html

[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

Branch Unspecified
7 years ago
disaster
guys plz help me to write this progam

123454321
1234 4321
123 321
12 21

the numbers must be printed in this form.😕

/* cinu97@gmail.com */
#include<stdio.h>
int main()
{
int i,j,n;
printf("Enter no");
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)
{
}
else
printf("%d",j);
}
printf("\n");
}}
7 years ago

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 <stdio.h> 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

Branch Unspecified
7 years ago
Use one for printing the numbers in a single line, and the other for the number of lines.
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