# C Program to print Floyd’s triangle

• Difficulty Level : Basic
• Last Updated : 02 Nov, 2021

Floyd’s triangle is a triangle with first natural numbers.

```1
2     3
4     5     6
7     8     9     10
11     12     13     14     15```

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Following program prints Floyd’s triangle with n lines.

## C++

 `#include ``using` `namespace` `std;` `void` `printFloydTriangle(``int` `n)``{``    ``int` `i, j, val = 1;``    ``for` `(i = 1; i <= n; i++)``    ``{``        ``for` `(j = 1; j <= i; j++)``            ``cout << val++ << ``" "``;``        ``cout << endl;``    ``}``}` `// Driver Code``int` `main()``{``    ``printFloydTriangle(6);``    ``return` `0;``}` `// This is code is contributed``// by rathbhupendra`

## C

 `// Without using a temporary variable and with only one loop``#include``void` `floyd(n){``    ``int` `i,j=1;``    ``for` `(i=1;i<=(n*(n+1))/2;i++){``        ``printf``(``"%d "``,i);``        ``if``(i==(j*(j+1))/2){``            ``printf``(``"\n"``);``            ``j++;``        ``}``    ``}``}` `int` `main(){``    ``floyd(6);``}` `//This code is contributed by Vishal B`

## Java

 `// Java program to print``// Floyd's triangle``class` `GFG``{``    ``static` `void` `printFloydTriangle(``int` `n)``    ``{``        ``int` `i, j, val = ``1``;``        ``for` `(i = ``1``; i <= n; i++)``        ``{``            ``for` `(j = ``1``; j <= i; j++)``            ``{``                ``System.out.print(val + ``" "``);``                ``val++;``            ``}``            ``System.out.println();``                ` `        ``}``    ``}``        ` `    ``// Driver Code``    ``public` `static` `void` `main(String[] args)``    ``{``        ``printFloydTriangle(``6``);``    ``}``}`

## Python3

 `# Python3 program to print``# Floyd's triangle``def` `loydTriangle(n):` `    ``val ``=` `1``    ``for` `i ``in` `range``(``1``, n ``+` `1``):` `        ``for` `j ``in` `range``(``1``, i ``+` `1``):``            ``print``(val, end ``=` `" "``)``            ``val ``+``=` `1``        ` `        ``print``("")` `loydTriangle(``6``)` `# This code is contributed by``# Smitha Dinesh Semwal`

## C#

 `// C# program to print``// Floyd's triangle``using` `System;` `class` `GFG``{``    ``static` `void` `printFloydTriangle(``int` `n)``    ``{``        ``int` `i, j, val = 1;``        ``for` `(i = 1; i <= n; i++)``        ``{``            ``for` `(j = 1; j <= i; j++)``            ``{``                ``Console.Write(val + ``" "``);``                ``val++;``            ``}``            ``Console.WriteLine();``        ``}``    ``}``        ` `    ``// Driver Code``    ``public` `static` `void` `Main()``    ``{``        ``printFloydTriangle(6);``    ``}``}`

## PHP

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## Javascript

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Output:

```1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21```

Time Complexity: O(n2)

Auxiliary Space: O(1)

-jsvpRc

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