WERTYU
Time Limit: 1000ms
Memory Limit: 65536KB
This problem will be judged on
PKU. Original ID:
2538
64-bit integer IO format: %lld Java class name: Main

A common typing error is to place the hands on the keyboard one row to the right of the correct position. So "Q" is typed as "W" and "J" is typed as "K" and so on. You are to decode a message typed in this manner.
Input
Input consists of several lines of text. Each line may contain digits, spaces, upper case letters (except Q, A, Z), or punctuation shown above [except back-quote (`)]. Keys labelled with words [Tab, BackSp, Control, etc.] are not represented in the input.
Output
You are to replace each letter or punctuation symbol by the one immediately to its left on the QWERTY keyboard shown above. Spaces in the input should be echoed in the output.
Sample Input
O S, GOMR YPFSU/
Sample Output
I AM FINE TODAY.
Source
代码分析:常量数组的妙用
#include<stdio.h>
char s[] = "`1234567890-=QWERTYUIOP[]\\ASDFGHJKL;'ZXCVBNM,./";
int main()
{
int i,c;
while((c =getchar()) != EOF)
{
for(i = 0; s[i] && s[i]!=c; i++);
if(s[i]) printf("%c",s[i-1]);
else printf("%c",c);
}
return 0;
}