poj1298
简单题
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
#include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> using namespace std; #define maxl 300 char decipher(char a) { if (!isupper(a)) return a; return (a - 'A' + (26 - 5)) % 26 + 'A'; } int main() { //freopen("t.txt", "r", stdin); while (1) { char st[maxl]; gets(st); if (st[0] == 'E') break; gets(st); int len = strlen(st); for (int i = 0; i < len; i++) putchar(decipher(st[i])); putchar('\n'); gets(st); } }