【PAT B1009】说反话

#include <iostream>
#include <cstdio>
using namespace std;
int main(void) {
    string str;
    getline(cin,str);
    int len = str.size(),r = 0,h = 0;//r为行,h为列
    char ans[90][90]; //ans[0]~ans[r]存放单词
    for(int i = 0;i<len;i++){
        if(str[i] != ' '){ //不是空格放进去
            ans[r][h++] = str[i];
        }else {
            ans[r][h] = '\0'; //末尾添加结束符 '\0'
            r++;
            h = 0;
        }
    }
    for(int i = r;i>=0;i--){
        cout << ans[i];
        if(i>0) cout << " ";
    }
    cout << endl;


}