C :

#include <stdio.h>
int main()
{
    int i,max;
    int buf[10];
    for(i=0;i<=9;i++)
        scanf("%d\n",&buf[i]);
    max=buf[0];
    for (i=1;i<10;i++)
    {   
        if(buf[i]>max)
            max=buf[i];
    }
    printf("%d\n",max);
}

C++ :

#include<iostream>
using namespace std;
int main()
{
  int a,max=-0xffff;
  while(cin >> a){
    if(a > max)
      max = a;
  }
  cout << max << endl;
  return 0;
}

Pascal :

var i,max:longint;a:array[1..10000]of longint; 
begin
  for i:=1 to 10 do readln(a[i]);
  max:=a[1];for i:=1 to 10 do if max<a[i] then max:=a[i];
  writeln(max);
end.

Java :

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner s=new Scanner(System.in);
		int a[]=new int[10];	
			for(int i=0;i<10;i++){
				a[i]=s.nextInt();		
			}			
		int max=a[0];
		for(int i=0;i<10;i++){
			if(a[i]>max)
				max=a[i];
		}		
		System.out.println(max);
		
	}

}

Python :

import sys
print max(int(x) for x in sys.stdin.readlines())

C# :

using System;

namespace C言语
{
    class _2_6
    {
        
        public static void Main()
        {
            int[] a = new int[10];
            int max = -2100000000;
            foreach (int i in a)
            {
                a[i] = int.Parse(Console.ReadLine());
                if (max < a[i]) max = a[i];
            }
            Console.WriteLine(max);          
            Console.ReadLine();
            return;
        }
    }
}