C :

#include<stdio.h>
#include<string.h>

int main()
{
	int t,i,n;
	char a[100];
	scanf("%d",&t);
	while(t--)
	{
		memset(a,'0',sizeof(a));
		scanf("%s%d",a,&n);
		for(i=0,a[strlen(a)]='0';;i++)
			if(a[i]=='.')
				break;
		printf("%c\n",a[i+n]);
	}
	return 0;
}

C++ :

#include<stdio.h>
#include<string.h>

int main()
{
	int t,i,n;
	char a[100];
	scanf("%d",&t);
	while(t--)
	{
		memset(a,'0',sizeof(a));
		scanf("%s%d",a,&n);
		for(i=0,a[strlen(a)]='0';;i++)
			if(a[i]=='.')
				break;
		printf("%c\n",a[i+n]);
	}
	return 0;
}

Pascal :

var
 o,i,t,n:longint;
 s:string;
begin
 readln(n);
 for o:=1 to n do begin 
     readln(s);
	 i:=pos(' ',s);
	 val(copy(s,i+1,length(s)-i),t);
	 if (t>i-pos('.',s)-1)  then writeln('0') else writeln(copy(s,pos('.',s)+t,1));
 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(" ");
			int cou = Integer.parseInt(ss[1]);
			String[] ss1 = ss[0].split("\\.");
			try{
				System.out.println(ss1[1].charAt(cou-1));
			}catch( java.lang.StringIndexOutOfBoundsException e){
				System.out.println(0);
			}
		}
	}

}

Python :

times = int(raw_input())
while times > 0:
	times -= 1
	number = raw_input()
	if int(number[-1]) > (number.index(' ') - number.index('.') - 1):
		print 0
	else:
		print number[number.index('.') + int(number[-1])]