HDU 2054 A == B ?（找小数点）

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=2054

Problem Description

Give you two numbers A and B, if A is equal to B, you should print "YES", or print "NO".

 

Input

each test case contains two numbers A and B.

 

Output

for each case, if A is equal to B, you should print "YES", or print "NO".

 

Sample Input

1 2
2 2
3 3
4 3

 

Sample Output

NO
YES
YES
NO

思路：

此题关键是找小数点，找到小数点把最后面无效的零去掉再比較就OK。

代码例如以下：

#include <cstdio>
#include <cstring>
char a[100017], b[100017];
void re(char s[])
{
    int len = strlen(s);
    int p = 0;
    for(int i = 0; i < len; i++)
    {
        if(s[i] == '.')
        {
            p = 1;
            break;
        }
    }
    if(p)
    {
        for(int i = len-1; i >= 0; i--)
        {
            if(s[i] == '0')
                s[i] = '';
            else
                break;
            len--;
        }
        if(s[len-1] == '.')
            s[len-1] = '';
    }
}
int main()
{
    while(~scanf("%s%s",a,b))
    {
        re(a);
       // printf("%s
",a);
        re(b);
       // printf("%s
",b);
        if(strcmp(a,b))
            printf("NO
");
        else
            printf("YES
");
    }
    return 0;
}