Validate an IP Address

PROBLEM :

Write a program to Validate an IPv4 Address. Your task is  to complete the function isValid which returns 1 if the ip address is valid else returns 0. The function takes a string ip as its only argument .

Input:
The first line of each test case contains an integer T denoting the number of test case . Then T test cases follow . Each test case takes a string ip.

Output:
For each test case output will be 1 if the string is a valid ip address else 0.

Constraints:
1<=T<=50
1<=length of string <=50

Example(To be used only for expected output) :

Input
2
222.111.111.111
5555..555

Output
1
0

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SIMPLE c++ IMPLEMENTATION :
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/* The function returns 1 if
IP string is valid else return 0
You are required to complete this method */

bool check(char *,int ,int ) ;
int isValid(char *ip)
{
   int beg,end ;
   beg=0 ;
   end=0 ;
 
   int len,i,no ;
   len=strlen(ip) ;
   no=0 ;
 
   for(i=0;i<len;i++)
   {
        if(ip[i]!='.')
            end++ ;
        else
        {
            no++ ;
            if(!check(ip,beg,end))
                return 0 ;
            beg=i+1 ;
            end=i+1 ;
        }
   }
   if(no!=3)
        return 0 ;
 
   return 1 ;
}

bool check(char *ip,int beg,int end)
{
    if(end<=beg)
        return 0 ;
       
    while(beg!=end)
    {
        if(!((ip[beg]>='0')&&(ip[beg]<='9')))
            return 0 ;
        beg++ ;
    }
    return 1 ;
}

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