POJ 2538 WERTYU(打错字符——制表)

#define LOCAL

#include<cstdio>
#include<iostream>
#include<string.h>
using namespace std;

const char a[]="`1234567890-=QWERTYUIOP[]\\ASDFGHJKL;\'ZXCVBNM,./";
int main()
{
#ifdef LOCAL
    freopen("/Users/wangkeyuan/i.txt","r",stdin);
    freopen("/Users/wangkeyuan/o.txt","w",stdout);
#endif
    char c;
    while((c=getchar())!=EOF)
    {
        int i;
        for(i=0;a[i]&&a[i]!=c;i++);
        if(a[i])
            printf("%c",a[i-1]);
        else
            printf("%c",c);
    }
}