#include<stdio.h>
#define MAX_CITY_NAME_LEN 1000
char WhatToDo(void)
{
char city_name[MAX_CITY_NAME_LEN+1]; /* 涓?\0'鐣欎釜鍦版柟 */
char result = '\0';

scanf("%s", city_name); /* 璇荤?涓

char a;
a=WhatToDo();