C :

#include<stdio.h>
int main()
{
	int a,b,c,max;
	scanf("%d%d%d",&a,&b,&c);
	max=a>b?a:b;
	max=max>c?max:c;
	printf("%d\n",max);
	return 0;
}

C++ :

#include<iostream>
using namespace std;
int main()
{
	int a,b,c,d;
	cin>>a>>b>>c;
	if (a>b)
		d=a;
	else
		d=b;
	if (d>c)
		d=d;
	else
		d=c;
	cout<<d<<endl;
	return 0;
}

Pascal :

var
a,b,c,max:longint;
begin
 readln(a,b,c);
 if a>b then max:=a
        else max:=b;
 if c>max then max:=c;
 writeln(max);
end.

Java :

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		List<Integer> list1 = new ArrayList<Integer>();
		int m ;
		for (int i = 0; i < 3; i++)
			list1.add(in.nextInt());
		 m=Collections.max(list1);
				System.out.print(m);
		
	}
}