Remove values in a string in c++ programming?

how do i remove a reoccurrence of a value in a string:





this is how i started it





string message = " classic class"


char r = 's"





i now want to remove all the char remove in string message using a void function





void remove(string message, char r)





string::size_type pos, stop;





pos = message.find(r, 0);


stop = message.length();


while (pos %26lt; stop){


message.erase (pos,stop);


pos = message.find (c, pos + 1);


}


cout %26lt;%26lt; message%26lt;%26lt; endl;








somehow i cannot get an output, displaying .......claic cla








can someone please help me

Remove values in a string in c++ programming?
i think that the mistake was in this line


message.erase(pos,stop) in the while loop


coz when you did this pos=message.find(r,0);


pos locates the first 's' in the string


and stop=message.length;


so when u wrote this //message.erase(pos,stop);


it removes all the characters starting from the first 's'


u located with (pos) to the end of the string (stop)


and the string then becomes "cla"





u can do this


string message="classic class";


char r='s';





while (message.find(r)!=string::npos) /*message.find(r) returns string::npos if it doesn't find the char 's' and when this happens it breaks the loop */


{


string::size_type pos=message.find(r);


message.erase(pos,1); /* 1 in the second parameter to erase only one character which must be an 's' */


}


cout%26lt;%26lt;message%26lt;%26lt;endl;





/* pure code to use :D */


string message="classic class";


char r='s';





while (message.find(r)!=string::npos)


{


string::size_type pos=message.find(r);


message.erase(pos,1);


}


cout%26lt;%26lt;message%26lt;%26lt;endl;





hope i helped u and sorry for my bad english :$
Reply:I haven't done C++ in a while, but I did notice a few things:





1. "message.erase (pos,stop);"


Seems like you're removing everything from the first "s" to the length of the message.





2. "pos = message.find (c, pos + 1);"


'c' is not declared? This doesn't seem good if the letter is removed, since all the letters are renumbered. That is assuming the erase function does what you say.





3. "while (pos %26lt; stop){"


Perhaps you should test the condition if nothing is found in the 'pos' variable?