编辑代码

#include <stdio.h>
void shuchu(char a[],int sum){
    printf("%c",a[sum-1]);
    printf(" ");
    sum--;
    if(sum!=0){
        shuchu(a,sum);
    }
}
int main()
{
    char a[100],ch;
    int n=0;
    while((ch=getchar())!='.'){
        a[n++]=ch;
    }
    a[n]='\0';
    shuchu(a,n);
    return 0;
}