# C++ : Code To Create Pyramid and Pattern

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

### 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;
}

## C++

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