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C++ : Code To Create Pyramid and Pattern

Tutorial by:Manisha Dubey      Date: 2016-06-18 04:26:33

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List of Source Code
Code to draw triangle using *, digits and characters
Code to display inverted triangle using * and digit
Code to construct pyramid
Code to construct reverse pyramid
Code to construct Pascal's traingle
Code to construct Floyd's triangle

 

C++ Program To display the triangle using *, numbers and character

Write a C++ Program to print half pyramid as using * as shown in figure below.


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

#include <iostream>
using namespace std;
int main()
{
    int i,j,rows;
    cout << "Enter the number of rows: ";
    cin >> rows;
    for(i=1;i<=rows;++i)
    {
        for(j=1;j<=i;++j)
        {
           cout << "* ";
        }
        cout << endl;
    }
    return 0;
}

Write a C++ Program to print half pyramid as using numbers as shown in figure below.


1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

#include <iostream>
using namespace std;
int main()
{
    int i,j,rows;
    cout << "Enter the number of rows: ";
    cin >> rows;
    for(i=1;i<=rows;++i)
    {
        for(j=1;j<=i;++j)
        {
           cout << j << " ";
        }
        cout << endl;
    }
    return 0;
}

Write a C++ Program to print triangle of characters as below


A
B B
C C C
D D D D
E E E E E

#include<iostream>
using namespace std;
int main()
{
    int i,j;
    char input,temp='A';
    cout << "Enter uppercase character you want in triangle at last row: ";
    cin >> input;   
    for(i=1;i<=(input-'A'+1);++i)
    {
        for(j=1;j<=i;++j)
           cout << temp << " ";
           ++temp;
           cout << endl;
    }
    return 0;
}

C++ Program To Display inverted half pyramid using * and numbers

Write a C++ Program to print inverted half pyramid using * as shown below.


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

#include <iostream>
using namespace std;
int main() 
{
    int i,j,rows;
    cout << "Enter the number of rows: ";
    cin >> rows;
    for(i=rows;i>=1;--i)
    {
        for(j=1;j<=i;++j)
        {
           cout << "* ";
        }
        cout << endl;
    }
    return 0;
}

 

 
 

Write a C++ Program to print inverted half pyramid as using numbers as shown below.


1 2 3 4 5
1 2 3 4 
1 2 3
1 2
1

#include <iostream>
using namespace std;
int main()
{
    int i,j,rows;
    cout << "Enter the number of rows: ";
    cin >> rows;
    for(i=rows;i>=1;--i)
    {
        for(j=1;j<=i;++j)
        {
           cout << j << " ";
        }
        cout << endl;
    }
    return 0;
}

C++ Program To display the pyramid of * and digits

Write a C++ program to print pyramid using *.

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

#include <iostream>
using namespace std;
int main()
{
    int i,space,rows,k=0;
    cout << "Enter the number of rows: ";
    cin >> rows;
    for(i=1;i<=rows;++i)
    {
        for(space=1;space<=rows-i;++space)
        {
           cout << "  ";
        }
        while(k!=2*i-1)
        {
           cout << "* ";
           ++k;
        }
        k=0;
        cout << endl;
    }
    return 0;
}

Write a C++ program to print the pyramid of digits in pattern as below.

        
        1
      2 3 2
    3 4 5 4 3
  4 5 6 7 6 5 4
5 6 7 8 9 8 7 6 5

#include <iostream>
using namespace std;
int main()
{
   int i,space,rows,k=0,count=0,count1=0;
   cout << "Enter the number of rows: ";
   cin >> rows;      
   for(i=1;i<=rows;++i)   
   {
       for(space=1;space<=rows-i;++space)
       {
          cout << "  ";
          ++count;
        }
        while(k!=2*i-1)
        {
           if (count<=rows-1) 
           {
             cout << " " << (i+k);
             ++count;
           }
           else
           {
             ++count1;
              cout << " " << (i+k-2*count1); 
           }
           ++k;
        }
        count1=count=k=0;
        cout << endl;
    }
    return 0;
}

Write a C++ program to display reverse pyramid.


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

#include <iostream>
using namespace std;

int main()
{
    int rows,i,j,space;
    cout << "Enter the number of rows: ";
    cin >> rows;      
    for(i=rows;i>=1;--i)
    {
        for(space=0;space<rows-i;++space)
           cout << "  ";
        for(j=i;j<=2*i-1;++j)
          cout << "* ";
        for(j=0;j<i-1;++j)
            cout << "* ";
        cout << endl;
    }
    return 0;
}

C++ Program to Draw Pascal's triangle


           1
         1   1
       1   2   1
     1   3   3    1
   1  4    6   4   1
 1  5   10   10  5   1 

#include <iostream>
using namespace std;
int main()
{
    int rows,coef=1,space,i,j;
    cout << "Enter the number of rows: ";
    cin >> rows;      
    for(i=0;i<rows;i++)
    {
        for(space=1;space<=rows-i;space++)
        cout << "  ";
        for(j=0;j<=i;j++)
        {
            if (j==0||i==0)
                coef=1;
            else
               coef=coef*(i-j+1)/j;
            cout << "   " <<  coef;
        }
        cout << endl;
    }
    return 0;
}

,

C++ Program to display Floyd's Triangle.


1
2 3
4 5 6
7 8 9 10

#include <iostream>
using namespace std;
int main()
{
    int rows,i,j,k=0;
    cout << "Enter the number of rows: ";
    cin >> rows;      
    for(i=1;i<=rows;i++)
    {
        for(j=1;j<=i;++j)
          cout << k+j << " ";
        ++k;
        cout << endl;
    }
    return 0;
}

 

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