C :

#include<stdio.h>
int main(){
int i=1;
int sum=1;
for(;i<=5;i++)
  sum*=i;
printf("%d",sum);
return 0;}

C++ :

#include <stdio.h>
int main() {
	int i, ans;
	ans = 1;
	for (i = 1;i <= 5;i++) {
		ans *= i;
	}
	printf("%d\n", ans);
	return 0;
}

Pascal :

begin
   writeln('120');
end.  

Java :

public class Main {
	public static void main(String[] args) {
		int x=1*2*3*4*5;
		System.out.println(x);	
	}
}

Python :

print 120

C# :

using System;

namespace C言语
{
    class _2_1
    {
        static void Main()
        {
            int ans = 1;
            int[] a=new int[5]{1,2,3,4,5};
            foreach(int i in a)
            {
                ans*=i;
            }
            Console.WriteLine(ans);            
            Console.ReadLine();
            return;
        }
    }
}