One-Handed Typist

#include<bits/stdc++.h>

using namespace std;

char str[]  = "`1234567890-=qwertyuiop[]asdfghjkl;'zxcvbnm,./~!@#$%^&*()_+QWERTYUIOP{}|ASDFGHJKL:ZXCVBNM<> ";

char str1[] = "`123qjlmfp/[]456.orsuyb;=789aehtdck-0zx,inwvg'~!@#QJLMFP?{}$%^>ORSUYB:+|&*(AEHTDCK)ZX<INWVG ";

int ascii[260];

char input[1002];

void init(int len)
{
    int i;

    for(i=0;i<len;i++)
    {
        ascii[str[i]] = str1[i];
    }
}

int main()
{
    int len = strlen(str),i,a;

    char ch = '"';

    init(len);

    while(gets(input))
    {
        len = strlen(input);

        for(i=0;i<len;i++)
        {
            if(input[i]=='\\')
            {
                printf("\\");
            }
            else if(input[i]=='"')
            {
                printf("_");
            }
            else if(input[i]=='?')
            {
                printf("%c",ch);
            }
            else
            {
                printf("%c",ascii[input[i]]);
            }
        }

        printf("\n");
    }

    return 0;
}