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  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1560
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c++ zigzag pattern setw

Hello, i'm stuck ones again.... the code should generate a zigzag something like this

Please enter the maximum field width: 9
Enter the microseconds to pause between asterisks: 50000
*
 *
  *
   *
    *
     *
      *
       *
        *
       *
      *
     *
    *
   *
  *
 *
*
 *
  *
   *
    *
     *
      *
       *
        *
       *
      *
     *
    *
   *
  *
 *
*
 *
  *
   *
    *
     *
      *
       *
        *
       *
      *
     *
    *
   *
  *
 *
*
^C
my code below kinds of works but i don't know what i'm doing wrong any help would be great thanks

#include <iostream>
#include <cstdlib>
#include <iomanip>
using namespace std;

int main(void)
{

  int width;
  int interval;
  cout <<"Please enter the maximum field width: ";
  cin>> width;
  cout <<"Enter the micrososeconds to pause between asterisks: ";
  cin >> interval;

int n =1;

while (n <=width)
{
   cout <<(setw(n)) << "*" <<endl;
   n++;

}

while (true)

{

for(n =1; n<=width; n++)
cout << setw(n) <<"*" <<endl;

for(n=width; n > 1; n--)
cout << setw(n) <<"*" <<endl;
usleep(interval);


}

}

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0
businessesatoz
Asked:
businessesatoz
2 Solutions
 
jkrCommented:
Well, the only thing that is wrong is that you are printing the 'topmost' star twice, so when counting doen, start at 'width - 1', i.e.
#include <iostream>
#include <cstdlib>
#include <iomanip>
using namespace std;

int main(void)
{

  int width;
  int interval;
  cout <<"Please enter the maximum field width: ";
  cin>> width;
  cout <<"Enter the micrososeconds to pause between asterisks: ";
  cin >> interval;

int n =1;

while (n <=width)
{
   cout <<(setw(n)) << "*" <<endl;
   n++;

}

while (true)

{

for(n =1; n<=width; n++)
cout << setw(n) <<"*" <<endl;

for(n=width - 1; n > 1; n--) // <-- here
cout << setw(n) <<"*" <<endl;
usleep(interval);


}

return 0; // that should be added as well
}

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0
 
ssnkumarCommented:
You have not explained your problem properly.
When I run your program, I get the following o/p:

Please enter the maximum field width: 5
Enter the micrososeconds to pause between asterisks: 100000
*
 *
  *
   *
    *
*
 *
  *
   *
    *
   *
  *
 *
*
I see that, in the beginning, you are having one slope and the opposite slope is not there.
After that, everything is ok.
If this is the problem, then remove the following lines (from line#18 to 23 in your post):
 
while (n <=width)
{
   cout <<(setw(n)) << "*" <<endl;
   n++;

}

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And your code runs forever.
I think, you are doing that on purpose.
0
 
businessesatozAuthor Commented:
thank you all for your help.
0
 
DK88Commented:
How could this program be stopped by entering Ctrl+C?
0

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