C :

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

char a[1000],b[1000];

int find_point(char s[])       // 判断是否为小数
{
	for(int i = 0;i < strlen(s); i++)
	{
		if(s[i] == '.')
		return 1;
	}
	return 0;
}

void del_zero(char s[])
{
	int len,i,count;
	if(find_point(s))
	{
	    len = strlen(s);
		for(i = len -1; i >= 0; i--)     // 除去小数后面的0
		{
			if(s[i] == '0')
			s[i] = '\0';
			else
			break;
		}
		len = strlen(s) -1;
		if(s[len] == '.')
		s[len] = '\0';
	}
	if(s[0] == '+')            // 符号为正数情况
	{
		len = strlen(s);
		count = 1;
		for(i = 1; i < len; i++)
		{
			if(s[i] == '0'&&s[i+1] != '\0')
			count++;
			else
			break;
		}
		for(i = 0; i < len - count; i++)
		{
			s[i] = s[i+count];
		}
		s[i] = '\0';
	}
	else if(s[0] == '-')     //符号为负数的情况
	{
		len = strlen(s);
        count = 0;
		for(i = 1; i < len; i++)
		{
			if(s[i] == '0'&&s[i+1] != '\0')
			count++;
			else
			break;
		}
		for(i = 1; i < len -count; i++)
		{
			s[i] = s[i+count];
		}
		s[i] = '\0';
		if(s[0] == '-'&&s[1] == '0')
		{
			s[0] = '0';
			s[1] = '\0';
		}
	}
	else                       //没有符号的情况
	{
		len = strlen(s);
		count = 0;
		for(i = 0; i < len; i++)
		{
			if(s[i] == '0'&&s[i+1] != '\0')
			count++;
			else
			break;
		}
		for(i = 0; i < len - count; i++)
		{
			s[i] = s[i+count];
		}
		s[i] = '\0';
	}
}
int main()
{
	while(scanf("%s%s",&a,&b) != EOF)
	{
		del_zero(a);
		del_zero(b);
		printf("%s\n",strcmp(a,b)?"NO":"YES");
	}
	return 0;
}

Java :

import java.util.Scanner;
import java.math.BigDecimal;
public class Main
{
	public static void main(String[] args)
	{
		Scanner sc=new Scanner(System.in);
		while(sc.hasNext()){
			BigDecimal A=sc.nextBigDecimal();
			BigDecimal B=sc.nextBigDecimal();
			BigDecimal C=A.subtract(B);
			if(C.compareTo(BigDecimal.ZERO) == 0){
				System.out.println("YES");
			}else{
				System.out.println("NO");
			}
		}
	}
}