DaniWeb Forum Index > Software Development > C++

how to display this shape using for loop?

Please support our C++ advertiser: Intel Parallel Studio Home

Thread Solved

•

Join Date: Oct 2009

Posts: 63

Reputation: samsons17 is an unknown quantity at this point

Solved Threads: 1

samsons17

Offline

Junior Poster in Training

how to display this shape using for loop?

Nov 9th, 2009

how to display this output ?

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

thank you...

•

Join Date: Oct 2009

Posts: 133

Reputation: restrictment is on a distinguished road

Solved Threads: 10

restrictment restrictment is offline

Offline

Junior Poster

Nov 9th, 2009

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

•

Join Date: Dec 2008

Posts: 1,417

Reputation: firstPerson is just really nice

Solved Threads: 182

firstPerson firstPerson is offline

Offline

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) What word becomes shorter if you add a letter to it? [ Solved by : niek_e, Paul Thompson, SgtMe, murtan, xavier666, jonsca, orangejediman]
2) What does this sequence  equal to :  (.5u - .5a)(.5u-.5b)(.5u-.5c) ...[*solved by : murtan, xavier666]
3) What is the 123456789th prime numer?

•

Join Date: Sep 2009

Posts: 69

Reputation: tkud is an unknown quantity at this point

Solved Threads: 14

tkud

Offline

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;
 }