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how to display this shape using for loop?

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Join Date: Oct 2009

Posts: 65

Reputation: samsons17 is an unknown quantity at this point

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samsons17

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Junior Poster in Training

how to display this shape using for loop?

Nov 9th, 2009

how to display this output ?

**********
*********
********
*******
******
*****
****
***
**
*
**
***
****
*****
******
*******
********
*********
**********

thank you...

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Join Date: Oct 2009

Posts: 133

Reputation: restrictment is on a distinguished road

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restrictment restrictment is offline

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Junior Poster

Nov 9th, 2009

Please show effort in trying to make the shape, and I will help you.

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Join Date: Dec 2008

Posts: 1,435

Reputation: firstPerson is just really nice

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firstPerson firstPerson is offline

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Nearly a Posting Virtuoso

Nov 9th, 2009

Here is a hint :

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
********** 10 stars
*********  9 stars
********   8 stars 
*******   7 stars
******  6 stars
***** 5 stars
**** 4 stars
***  3 stars
** 2 stars
* 1 stars
**  2 stars
*** 3 stars
**** 
*****
******
*******
********
*********
********** 10 stars
********** 10 stars
*********  9 stars
********   8 stars 
*******   7 stars
******  6 stars
***** 5 stars
**** 4 stars
***  3 stars
** 2 stars
* 1 stars
**  2 stars
*** 3 stars
**** 
*****
******
*******
********
*********
********** 10 stars

So you see that they decrease by 1 star until they reach 1 then they
start increment.

so assuming you can separate this problem into 2 blocks, you can
do something like this :

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
for(int i = 10; i != 1; i--)
     printStars(i); //a function that prints i stars with endl
for(int i = 2; i <= 10; i++)
     printStars(i);
for(int i = 10; i != 1; i--)
     printStars(i); //a function that prints i stars with endl
for(int i = 2; i <= 10; i++)
     printStars(i);

Now what should your printStars look like :
for example if one calls printStars(4) it should output the following :

Help with Code Tags

C++ Syntax (Toggle Plain Text)

****

Go ahead and try to devise printStars then you problem becomes much
easier.

Help with Code Tags

(Toggle Plain Text)

1) Prove that the area of a circle is pi*r^2, where "r" is the radius of the circle.
2) Problem 2[b]solved by : jonsca

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Join Date: Sep 2009

Posts: 70

Reputation: tkud is an unknown quantity at this point

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tkud

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Junior Poster in Training

re

-1

Nov 9th, 2009

This should do...

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
#include<iostream>
using namespace std;
void printstar(int num_of_times);
void reverseprint(int highest);
int main()
{
 for(int i=0;i<10;i++){
 printstar(i);
 }
 reverseprint(10);
 return 0;
}
 
 void printstar(int num_of_times){
 for(int i=0;i<num_of_times;i++){
 cout<<"* ";
 }
 cout<<endl;
 }
 
 void reverseprint(int highest){
 for(int i=0;i<highest;i++){
 int x=highest-i;
 printstar(x);
 }
 cout<<endl;
 }
#include<iostream>
using namespace std;
void printstar(int num_of_times);
void reverseprint(int highest);
int main()
{
 for(int i=0;i<10;i++){
 printstar(i);
 }
 reverseprint(10);
 return 0;
}

 void printstar(int num_of_times){
 for(int i=0;i<num_of_times;i++){
 cout<<"* ";
 }
 cout<<endl;
 }
 
 void reverseprint(int highest){
 for(int i=0;i<highest;i++){
 int x=highest-i;
 printstar(x);
 }
 cout<<endl;
 }