Pattern Printing

1. Right Half Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    for (int r = 1; r <= 5; r++)
    {
        for (int c = 1; c <= r; c++)
        {
            cout << " * ";
        }
        cout << endl;
    }
    
    return 0;
}

Output:

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

2. Number Increasing Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main()
{
    for (int r = 1; r <= 5; r++)
    {
        for (int c = 1; c <= r; c++)
        {
            cout << c << "  ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

3. Number Repeating Triangle

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main()
{
 
    for (int r = 1; r <= 5; r++)
    {
        for (int c = 1; c <= r; c++)
        {
            cout << r << "  ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

4. Reverse Floyd's Triangle

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main()
{
 
    for (int r = 1; r <= 5; r++)
    {
        for (int c = r; c >= 1; c--)
        {
            cout << c << "  ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

5. Alphabet Right Traingle

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main()
{
 
    char ch = 'a';
    for (int r = 1; r <= 5; r++)
    {
        for (int c = 1; c <= r; c++)
        {
            cout << ch << "  ";
        }
        cout << endl;
        ch ++;
    }
 
    return 0;
}

Output:

a b b c c c d d d d e e e e e

6. Reversed Right Half Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    for (int r = 5; r >= 1; r--)
    {
        for (int c = 1; c <= r; c++)
        {
            cout << " * ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

7. Inverted Number Traingle

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main()
{
 
    for (int r = 5; r >= 1; r--)
    {
        for (int c = 1; c <= r; c++)
        {
            cout << c << "  ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

8. Decreasing Reversed Number Traingle

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main()
{
 
    for (int r = 5; r >= 1; r--)
    {
        for (int c = 5; c >= r; c--)
        {
            cout << c << "  ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

9. Left Half Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        for (int c = 1; c <= r; c++)
        {
            cout << "* ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

10. Left Half Number Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        for (int c = 1; c <= r; c++)
        {
            cout << r << " ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

11. Left Half Increasing Number Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        for (int c = 1; c <= r; c++)
        {
            cout << c << " ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

12. Left Half Increasing Character Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        char ch = 'a';
        for (char c = 1; c <= r; c++)
        {
            cout << ch << " ";
            ch++;
        }
        cout << endl;
    }
 
    return 0;
}

Output:

a a b a b c a b c d a b c d e

13. Left Half Repeating Character Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    char ch = 'a';
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        for (char c = 1; c <= r; c++)
        {
            cout << ch << " ";
        }
        cout << endl;
        ch++;
    }
 
    return 0;
}

Output:

a b b c c c d d d d e e e e e

14. Left Half Decreasing Number Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        for (int c = r; c >= 1; c--)
        {
            cout << c << " ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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

15. Full Star Pyramid

Code:

code.cpp

#include <iostream>
 
using namespace std;
 
int main() {
 
    int n = 5;
    for (int r = 1; r <= n; r++)
    {
        for (int c = 1; c <= n - r; c++)
        {
            cout << "  ";
        }
 
        for (int c = 1; c <= 2 * r - 1; c++)
        {
            cout << "* ";
        }
        cout << endl;
    }
 
    return 0;
}

Output:

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