Thread: Code Crash!!!

  1. #1
    Registered User
    Join Date
    Sep 2002
    Posts
    10

    Code Crash!!!

    Hi,
    I've written a code which replaces characters in a string with their respective URLEncode (i.e a " " will be replaced by "+" etc..).
    However the code crashes at execution.
    Please help!!
    Here's the code extract;
    Code:
    --------------------------------------------------------------------------------
    for(j=0;j<one.length();j++)
    {

    indxD = one.find_first_of ( " " , 0 );
    one.replace(indxD,1,"%2B",3);
    }
    ---------------------------------------------------------------------------------

    Thank You In Anticipation,
    John

  2. #2
    &TH of undefined behavior Fordy's Avatar
    Join Date
    Aug 2001
    Posts
    5,792
    Why this was doing on the contest board is beyond me!

    MOVED!

  3. #3
    julie lexx... btq's Avatar
    Join Date
    Jun 2002
    Posts
    161
    uhhmm...maybe you should paste some more code?
    It's kinda hard to tell what goes wrong from what you've shown us...

    /btq

  4. #4
    &TH of undefined behavior Fordy's Avatar
    Join Date
    Aug 2001
    Posts
    5,792
    To have a stab at it;
    Code:
    #include <iostream>
    #include <string>
    
    
    int main(){
    
    	using std::cout;
    	using std::endl;
    	using std::string;
    
    	string one("Hello World This Is Encoded");//string to encode
    	const string rep("%2B");//replacement token		   
    	string::size_type indxD = 0;//return of find...	
    				
    	std::cout << "Unencoded " << one << std::endl;
    
    	while(1){
    		indxD = one.find_first_of (' ',0);//find a char....
    		if(indxD == string::npos)break;//if -1 then end (not found!)
    		else one.replace(indxD,1,rep.c_str(),rep.length());//replace with token
    	}
    
    	std::cout << "Encoded " << one << std::endl;
    	
    
    }

  5. #5
    Just a Member ammar's Avatar
    Join Date
    Jun 2002
    Posts
    953
    I don't think there is something wrong with the loop, maybe it crashes from something else.

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