2279: 字符串分段(串)

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cctype>
using namespace std;
int main()
{  char a[100];
  // freopen("f.txt","r",stdin);
    gets(a);
    int i=0;
    while(!isalnum(a[i]))
        i++;
    for(;a[i]!='\0';i++)
    {  if(!isalnum(a[i]))
           {printf("\n");
           while(!isalnum(a[i]))
             i++;
           }
        if(isalnum(a[i])) printf("%c",a[i]);

}
}