PAT Basic Level 1009

AC 代码

#include <stdio.h>
int main()
{
    char string[100];
    gets(string);           //这条是重点，注意与scanf(%s)的不同
    int size = 0;
    while(string[size] != '')
    {
        size++;
     } 
     int flag = size ;
    while (flag != 0)           //开始 
    {
        
         do                   //此处用WHILE 就不行 
         {
             flag--;
         }while(string[flag] != ' '&&flag != 0);
         int temp = flag;
         if(flag != 0)
         {
             while(flag != size-1)
             {
                 printf("%c",string[++flag]);
             }
             printf(" ");
        }else
        {
            while(flag != size)
            {
                printf("%c",string[flag++]);
            }
        }
         size = temp;
         flag = temp;
         
    }
    
    return 0 ;
 }