YangHui triangle print test prog?

I just write a little prog to print YangHui triangle like this:

Code:

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                    1
                  1  1
                1  2  1
              1  3    3  1
            1  4  6  4  1

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This is my prog code:

Code:

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#include <iostream>
#include <stdio.h>

using namespace std;

// define function prototype
void yhtriangle(int& x);

int main()
{
  int lines;
     
  cout<<"This is a little prog to print YangHui triangle ."<<endl;
  cout<<"Please enter the lines what you want to print: "<<endl;
  cin>>lines;
 
  yhtriangle(lines);
 
  cout<<endl<<endl<<endl;

  system("pause");

  return 0;
   
}

void yhtriangle(int& x)
{
 
  int *yanghui;
  int *temp;      //to save operation value. 

  int n;         
  int blank;      //counter the space numbers
  int counter;
   
  //cin>>x;      // I decide to input x from main()
 
  //make two dynamic arrays
  yanghui = new int[x];
  temp = new int[x];
 
  //initialize arrayes
 
  for(n = 0; n < x; n++)
  {
    yanghui[n] = 0;
    temp[n] = 0;
  }
   
    yanghui[0] = 1; 
    temp[0] = 1;
    blank = x;

  //circulate print triangle
  for(counter = 0; counter < x; counter++)
  {
    for(n = 0; n < blank; n++)
      cout<<" ";     
    for(n = 0; n < counter; n++)
    {
        yanghui[n+1]=temp[n+1]+temp[n]; 
        cout<<yanghui[n]<<" "<<flush;
      temp[n] = yanghui[n];
    }
               
    cout<<endl;
    blank--;
  }
  delete new int[x];  //release dynamic array's memory.

}

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This little prog spent me one night and this morning time,
I was confused by defining dynamic array,
althoght it's running , but print graph is ugly,
please give some suggestion, how to change this statement:

Quote:

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cout<<yanghui[n]<<" "<<flush;

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Thanks!

Something wrong I have fond, this is edited code:

Code:

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#include <iostream>
#include <stdio.h>
#include <iomanip.h>    //add this statement;

using namespace std;

// define function prototype
void yhtriangle(int x);

int main()
{
  int lines;
     
  cout<<"This is a little prog to print YangHui triangle ."<<endl;
  cout<<"Please enter the lines what you want to print: "<<endl;
  cout<<"lines = "<<flush;
  cin>>lines;
  cout<<endl<<endl<<endl<<endl;
 
  yhtriangle(lines);
 
  cout<<endl<<endl<<endl;

  system("pause");

  return 0;
   
}

void yhtriangle(int x)
{
 
  int *yanghui;
        int *temp;      //to save operation value. 

  int n;         
  int blank;      //counter the space numbers
  int counter;
   
  //cin>>x;      // I decide to input x from main()
 
  //make two dynamic arrays
  yanghui = new int[x];
  temp = new int[x];
 
  //initialize arrayes
 
  for(n = 0; n < x; n++)
  {
    yanghui[n] = 0;
    temp[n] = 0;
    }
   
        yanghui[0] = 1; 
        temp[0] = 1;
    blank = x;
 
    //circulate print triangle
  for(counter = 0; counter < x; counter++)
  {
    for(n = 0; n < blank; n++)
      cout<<"  ";     
    for(n = 0; n <= counter; n++)    //should be '<=';
    {
        yanghui[n+1]=temp[n+1]+temp[n]; 
        cout<<setw(4)<<yanghui[n]<<" "<<flush;  //insert setw(4);
        temp[n] = yanghui[n];
    }
               
    cout<<endl;
    blank--;
  }
  delete new int[x];  //release dynamic array's memory.

}

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I using Thantos's suggestion to print result like this:

Code:

---

                                1
                              1    1
                            1    2    1
                          1    3    3    1
                        1    4    6    4    1
                      1    5  10  10    5    1
                    1    6  15  20  15    6    1
                  1    7  21  35  35  21    7    1
                1    8  28  56  70  56  28    8    1
              1    9  36  84  126  126  84  36    9    1
            1  10  45  120  210  252  210  120  45  10    1
          1  11  55  165  330  462  462  330  165  55  11    1
        1  12  66  220  495  792  924  792  495  220  66  12    1
      1  13  78  286  715 1287 1716 1716 1287  715  286  78  13    1
    1  14  91  364 1001 2002 3003 3432 3003 2002 1001  364  91  14    1

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It seems like there's a lesser slope on the right - why is that?

> delete new int[x]; //release dynamic array's memory.
Heh, this does nothing - except allocate and immediately free the memory.
Meanwhile, your other allocations leak away.

> #include <iomanip.h> //add this statement;
Why the old-style?
You're using namespaces.

Oh, and code tags please...

> It seems like there's a lesser slope on the right - why is that?
Check the number of spaces used for indentation

Quote:

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Originally Posted by sean_mackrory

It seems like there's a lesser slope on the right - why is that?

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on the left...in between the 5 and the 10, the 6 and 15, 7 and 21, etc... there is a blank (space...whatever) missing

edit: beaten

Quote:

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delete new int[x];

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@ Salem :

Please give some tip, how to correct it?
Thanks.

replace it with

Code:

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delete temp;
delete yanghui;

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Or even

Code:

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delete[] temp;
delete[] yanghui;

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