Thread: Having problem in User Defined function which works like strstr function

Hello,
this is my yet another problem i have made 1 user defined function which works pretty much like strstr function defined in string.h but it's having problem. I have figured out the problem but don't know how to solve it. Here is the code! Please have a look and tell me how to solve it?

Code:

#include <iostream.h>
char* ustrstr(char s[],char t[])
{
 int i,j;
 char *temp;
 for(i=0;s[i]!=NULL;i++)
 {
   j=0;
	temp=&s[i];
	while(t[j]==s[i] && s[i]!=NULL)
	{
		j++;
		i++;
	}
	if(t[j]==NULL)
		return temp;
	if(s[i]==NULL)
		i--;
 }
 return NULL;
}

int main(void)
{
 char s[100],*j;
 cout<<"\n\nEnter Any String :";
 cin.getline(s,100);

 j=ustrstr(s,"technology");
 if(j==NULL)
	cout<<"\n\nSubstring Not Found";
 else
	cout<<"\n\nSubstring Found :"<<j;
return 0;
}

Just give input as iliketechnology it works fine and then give ilikettechnology! it's not working i know where the problem is but dont know how to solve. Please help me