leetcode[44]Wildcard Matching

Implement wildcard pattern matching with support for '?' and '*'.

'?' Matches any single character.
'*' Matches any sequence of characters (including the empty sequence).

The matching should cover the entire input string (not partial).

The function prototype should be:
bool isMatch(const char *s, const char *p)

Some examples:
isMatch("aa","a") → false
isMatch("aa","aa") → true
isMatch("aaa","aa") → false
isMatch("aa", "*") → true
isMatch("aa", "a*") → true
isMatch("ab", "?*") → true
isMatch("aab", "c*a*b") → false

class Solution {
public:
    bool isMatch(const char *s, const char *p) {
     const char *ss=NULL;
     const char *pp=NULL;
     while(*s!='')
     {
         if(*p==*s||*p=='?')
         {
             s++;
             p++;
             continue;
         }
         if(*p=='*')
         {
             pp=p;
             ss=s;
              p++;
              continue;
         }
         if(pp!='')
         {
             s=ss+1;
             p=pp+1;
             ss++;
             continue;
         }
         return false;
     }
     while(*p=='*')p++;
     return *p=='';
    }
};