#include<stdio.h>
int main(){
char a;
while((a=getchar())!=EOF){
if(('a'<=a&&a<='z')||('A'<=a&&a<='Z')){
printf("%c is an alphabet.\n",a);
}else{
printf("%c is not an alphabet.\n",a);
}
getchar();
}
}
int main(){
char a;
while((a=getchar())!=EOF){
if(('a'<=a&&a<='z')||('A'<=a&&a<='Z')){
printf("%c is an alphabet.\n",a);
}else{
printf("%c is not an alphabet.\n",a);
}
getchar();
}
}