C :

#include<stdio.h>
int main()
{
	int a;
	int b;
	int c;
	scanf("%d %d %d",&a,&b,&c);
	if(a*a+b*b==c*c)
	{
		printf("yes\n");
	}
	else if(b*b+c*c==a*a)
	{
		printf("yes\n");
	}
	else if(a*a+c*c==b+b)
	{
		printf("yes\n");
	}
	else
	{
		printf("no\n");
	}
}

C++ :

#include<stdio.h>
int main()
{
    int a,b,c;
    scanf("%d%d%d",&a,&b,&c);
    if(a*a+b*b==c*c)
    printf("yes");
    else if(a*a+c*c==b*b)
    printf("yes");
    else if(b*b+c*c==a*a)
    printf("yes");
    else
    printf("no");
    return 0;
}

Java :

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double a=input.nextDouble(),b=input.nextDouble(),c=input.nextDouble();
        if(a*a+b*b==c*c||a*a+c*c==b*b||b*b+c*c==a*a) System.out.println("yes");
        else System.out.println("no");
    }
}

Python :

# coding=utf-8
#!/usr/bin/python2
import sys
import re
import math
a,b,c=(int(x) for x in raw_input().split(' '))
 
if a*a+b*b==c*c or a*a+c*c==b*b or b*b+c*c==a*a:
    print "yes"
else:
    print "no"

C# :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp2
{
    internal class Program
    {
        static void Main()
        {
            //int[] days = { 31,28,31,30,31,30,31,31,30,31,30,31};
            /*int n = Convert.ToInt32 (Console.ReadLine());
            string[] a1 = Console.ReadLine().Split();
            double r = Convert.ToDouble(a1[0]);
            double b = Convert.ToDouble(a1[1]);
            double c = Convert.ToDouble(a1[2]);
            float pi = 3.1415926f;
            string S = ((r + b+c) / n).ToString("0.00");
            */
            string[] n = Console.ReadLine().Split(' ');
            int a = Convert.ToInt16(n[0]); int b = Convert.ToInt16(n[1]); int c = Convert.ToInt16(n[2]);
            int max =0;
            int e = 0;
            int d = 0;
            if (a >= b && a >= c)
            {
                max=a;
                 d = b;
                 e = c;
            }
            else if (b >= a && b >= c)
            {
                max = b;
                 d = c;
                 e = a;
            }
            else { max = c;
                d = a;
                e = b;
            }
            string T = "no";  
            if (Math.Pow(d, 2) + Math.Pow(e, 2) == Math.Pow(max, 2))
            {
                T = "yes";
            }
  
            Console.WriteLine(T);
            ;
            Console.ReadKey();

        }
    }
}