#include<iostream> #include<cstring> #include<cmath> using namespace std; char a[50]; int main(){ //strcpy( , ) 将字符数组~复值给~ //strcat( , ) 字符数组拼接 //strcmp(a,b) a>b cout<<"1" a==b cout<<"0" a<b cout<<"-1"; cin>>a; int q=strlen(a); for(int i=0;i<q;i++){ if(a[i]>='a' and a[i]<='z'){ a[i]=char(a[i]-32); }else{ a[i]=char(a[i]+32); } } //cout<<a<<endl; for(int i=0;i<=q/2;i++){ char p; p=a[i]; a[i]=a[q-1-i]; a[q-1-i]=p; } //cout<<a<<endl; for(int i=0;i<q;i++){ if(a[i]>='a' and a[i]<='z'){ a[i]=char((a[i]-97+3)%26+97); }else{ a[i]=char((a[i]-65+3)%26+65); } } for(int i=0;i<q;i++){ cout<<char(a[i]); } return 0; }