C :

#include<stdio.h>

int N;

char str[1005];

int main()
{
	while(scanf("%d%*c",&N)==1) while(N--)
	{
		gets(str);
		int i=0;
		while(str[i])
		{
			while(str[i]==' ') { printf("%c",str[i++]); }
			int WordLeft=i;
			while(str[i]&&str[i]!=' ') { ++i; }
			int WordRight=i-1;
			while(WordLeft<=WordRight) { printf("%c",str[WordRight--]); }
		}
		printf("\n");
	}
	return 0;
}

C++ :

#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;

int main()
{
	int n,i,j;
	char a[1001],b[1001];
	scanf("%d%*c",&n);
	while(n--)
	{
		gets(a);
		for(i=j=0;a[i]!='\0';i++,j++)
		{
			b[j]=a[i];
			if(a[i]==' ')
			{
				b[j]='\0';
				reverse(b,b+strlen(b));
				printf("%s",b);
				printf(" ");
				j=-1;
			}
		}
		b[j]=a[i];
		reverse(b,b+strlen(b));
		printf("%s\n",b);
	}
	return 0;
}

Pascal :

program p1048;
var st,s:ansistring;
    i,j,k,t:longint;
begin
  readln(t);
  for i:=1 to t do
  begin
    readln(st);
    k:=pos(' ',st);
    while k<>0 do
    begin
      s:=copy(st,1,k-1);
      for j:=length(s) downto 1 do
       write(s[j]);
      write(' ');
      delete(st,1,k);
      k:=pos(' ',st);
    end;
    for j:=length(st) downto 1 do
     write(st[j]);
    writeln;
  end;
end.

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int t = Integer.parseInt(in.nextLine());
		while(t-->0){
			String s = in.nextLine();
			String[] ss = s.split(" ");
			StringBuffer sb = new StringBuffer();
			for(int i=0;i<ss.length;i++){
				StringBuffer tem = new StringBuffer(ss[i]);
				tem.reverse();
				sb.append(" ").append(tem);
			}
			System.out.println(sb.toString().substring(1));
		}
	}

}

C# :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace _1048
{
    class Program
    {
        static void Main(string[] args)
        {
            string input;
            while ((input = Console.ReadLine())!=null)
            {
                int n = Convert.ToInt32(input);
                while ((n--) != 0)
                {
                    string temp = Console.ReadLine();
                    string[] data = new string[1000];
                    data = temp.Split(' ');
                    int i;
                    int len = data.Length;
                    char[] result = new char[100];
                    bool flag = true;
                    for(i=0;i<len;i++)
                    {
                        result=data[i].ToCharArray();
                        Array.Reverse(result);
                        if (flag)
                        {
                            Console.Write(result);
                            flag = false;
                        }
                        else
                        {
                            Console.Write(' ');
                            Console.Write(result);
                        }
                    }
                    Console.WriteLine();
                }
            }
        }
    }
}