10082 - WERTYU

You can combine all the arrays in one and can do a lot better :) , I was just rushing through when I coded these.

//
//  main.cpp
//  WERTY
//
//  Created by Panks on 27/05/12.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//

#include <iostream>
#include <algorithm>
#include <string>
using namespace std;



#define ull unsigned long long
#define ll long long

#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define REP(i,n) FOR(i,0,n-1)

#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define REPD(i,n) FOR(i,n-1,0)

#define testcase(t) int t;scanf("%d",&t);while(t--)
#define s(x) scanf("%d",&x)
#define sl(x) scanf("%lld",&x)
#define ss(x) scanf("%s",x)

#define p(x) printf("%d",x)
#define pl(x) printf("%lld",x)
#define ps(x) printf("%s",x)

#define pn(x) printf("%d\n",x)
#define pln(x) printf("%lld\n",x)
#define psn(x) printf("%s\n",x)

#define all(c) c.begin(),c.end() 




string row1="`1234567890-=", row2="QWERTYUIOP[]\?", row3="ASDFGHJKL;'", row4="ZXCVBNM,./<";

void replaceit(char a);
void replaceit(char a){
    if (a==' ') {
        cout<<" ";
    }
    string::iterator pos;
    
    if(count(row1.begin(), row1.end(), a)){
        pos=find(all(row1), a);
        pos--;
        cout<<*pos;
    }else if(count(row2.begin(), row2.end(), a)){
        pos=find(all(row2), a);
        pos--;

        cout<<*pos;
    }else if(count(row3.begin(), row3.end(), a)){
        pos=find(all(row3), a);
        pos--;

        cout<<*pos;    
    }else if(count(row4.begin(), row4.end(), a)){
        pos=find(all(row4), a);
        pos--;
        cout<<*pos;    
    }
}

int main (int argc, const char * argv[])
{
    string input;
    while(getline(cin, input)){
        for_each(input.begin(), input.end(), replaceit);
        cout<<endl;
    }
    
}