输入 wo xiang he ni jao peng you.，倒着打。

wo xiang he ni jao peng you.
wo
xiang
he
ni
jao
peng
you.

you. peng jao ni he xiang wo

#include <stdio.h>
#include <string.h>
int main()
{
    char *ps[1024]={0};
    char str[1024];
    gets(str);

    ps[0]=str;
    int j=1;
    int len=strlen(str);
    for(int i=1;i<len;i++){
        if(str[i]==' '){
            str[i]='\0';
            ps[j++] =&str[i+1];
        }

    }

    for(int i=0;i<j;i++){
        puts(ps[i]);
    }
    puts("");
    for(int i=j-1;i>=0;i--){
        printf("%s ",ps[i]);
    }
    return 0;
}