C Program to count the number of triangles that can be formed from an array

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Write a program to count the number of triangles that can be formed from an array.

For example :

The given array is: 6 18 9 7 10
The number of possible triangles that can be formed from the array is: 5

Input Format: 
 The input contains an integer represents the size and the next line contains the values

Constraints:
1<=N<=100
1 <= arr[i] <= 1000

Output Format:
Print the count sample Input 1

5
6 18 9 7 10

Sample Output 1

5

Code:

#include <stdio.h>

int main()
{
	int arr[100];
	int n;
	scanf("%d",&n);
	
	for(int i=0;i<n;i++){
	    scanf("%d",&arr[i]);
	}
	
		int count = 0;

	for (int i = 0; i < n; i++) {
		for (int j = i + 1; j < n; j++) {


			for (int k = j + 1; k < n; k++)

				if (arr[i] + arr[j] > arr[k]
					&& arr[i] + arr[k] > arr[j]
					&& arr[k] + arr[j] > arr[i])
					count++;
		}
	}
	printf("%d",count);

	return 0;
}


Code language: C/AL (cal)

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