help with implementation

After I wort this program and it runs really good, :
I got a question...
How could I impement new subtraction operator in order to write this:

string x = "Idontlikeprograming";
string y = x - "dont";
cout<< y; //the result is : " Ilikeprograming"

So fare I wrote this program:

---------------------
You can run it... I got the idea.. but I need to write it as shown up
---------------------
#include <iostream>
#include <string>

string del1(string sor, string dis){
string temp;
string::iterator sor_ptr = sor.begin();
while(sor_ptr <= sor.end()) {
bool found = false;
string::iterator dis_ptr = dis.begin();
for(; dis_ptr<=dis.end(); dis_ptr++) {
if (*sor_ptr == *dis_ptr){
found = true;
}// if
}// for
if (!found) temp+= *sor_ptr;
sor_ptr++;
}// While loop

return temp;

}// del1

string operator - (string & left, string & right){
// catenate two string values, forming a new string

string res= del1( left, right);
return res; // return result
// we can also writ here the body of del1 function
}


int main(){
/* string s1= " thisisnotfun";
string s2= s1 - "not";
cout<< s2<< endl; */
string source;
cout<< "Please inter the first string"<<endl;
getline(cin, source);
string dist;
cout<< "Please inter the second string"<<endl;
getline(cin,dist);
string edit1 = del1(source, dist);
cout << edit1 << endl;

return 0;
}

Thankx Guys...

if you use spaces you can use strtok(maybe, might only be for char arrays) to tokenize words into a temp string and then check if the temp is the word you want to remove. If it isnt add it to the real string, if it is, ignore and continue.

And pleeeeeeeease use code tags!!!!!!!!

hi ErionD,
Please can you discribe it in more details...

Please tell me more about it ...

I told you before that I will never help you if you don't use code tags.

I will use it ...
but please help me...

#include <iostream.h>
#include <string.h>

Like this :p

Help me please ... ;)

No.

Submit the code again with code tags.

string x = "Idontlikeprograming";
string y = x - "dont";
cout<< y; //the result is : " Ilikeprograming"

So fare I wrote this program:

---------------------
You can run it... I got the idea.. but I need to write it as shown up
---------------------
#include <iostream.h>
#include <string.h>

string del1(string sor, string dis){
string temp;
string::iterator sor_ptr = sor.begin();
while(sor_ptr <= sor.end()) {
bool found = false;
string::iterator dis_ptr = dis.begin();
for(; dis_ptr<=dis.end(); dis_ptr++) {
if (*sor_ptr == *dis_ptr){
found = true;
}// if
}// for
if (!found) temp+= *sor_ptr;
sor_ptr++;
}// While loop

return temp;

}// del1

string operator - (string & left, string & right){
// catenate two string values, forming a new string

string res= del1( left, right);
return res; // return result
// we can also writ here the body of del1 function
}


int main(){
/* string s1= " thisisnotfun";
string s2= s1 - "not";
cout<< s2<< endl; */
cout<< " I did submet the tags with the code"<< endl;
cout<<"can you help me now"<< endl;
string source;
cout<< "Please inter the first string"<<endl;
getline(cin, source);
string dist;
cout<< "Please inter the second string"<<endl;
getline(cin,dist);
string edit1 = del1(source, dist);
cout << edit1 << endl;

return 0;
}
:(

To use a code tag, precede your code with "code" and follow it with "/code". Replace the quotation marks with [ and ]. Thank you.

use [ CODE] without the space before the code and then the same but with a / before CODE after it. Is it really so hard????

Anyway:

Code:

---

char string[50];
char newstring[50];
char temp[20];

strcpy(string,"String with spaces");
temp = strtok(string," ");

if(strcmp(temp,"with")!=0) {
strcat(newstring,temp);
strcat(newstring," ");
}
temp = strtok(NULL," ");

---

Then just put it all in a loop.

Code:

---


#include <iostream.h>
#include <string.h>

string del1(string sor, string dis){
 string temp;
 string::iterator sor_ptr = sor.begin();

 while(sor_ptr <= sor.end()) {
 bool found = false;
 string::iterator dis_ptr = dis.begin();
 
 for(; dis_ptr<=dis.end(); dis_ptr++) {
 if (*sor_ptr == *dis_ptr){
 found = true;
 }// if
 }// for

 if (!found) temp+= *sor_ptr;
 sor_ptr++;
 
 }// While loop

return temp;
}// del1

string operator - (string & left, string & right){
// catenate two string values, forming a new string

 string res= del1( left, right);
 return res; // return result
// we can also writ here the body of del1 function
}


int main(){
  /* string s1= " thisisnotfun";
  string s2= s1 - "not";
  cout<< s2<< endl; */

string source;
string dist;
string edit1;
 
cout<< " I did submet the tags with the code"<< endl;
cout<<"can you help me now"<< endl;

cout<< "Please inter the first string"<<endl;
getline(cin, source);


cout<< "Please inter the second string"<<endl;
getline(cin,dist);

edit1 = del1(source, dist);
cout << edit1 << endl;

return 0;
}

---

:p Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaha

guys thanks for your help ...
You know as a bigner, I am here to learn ... and Sorry for making problems... but the thing that I want to say is : " I am not allow to use the string function that came with thew string lib."
I want to implement a new operator to add it to the string lib functions and operators.....
It is very easy to use the strtok and strcpy and strcat...

According to the Prof. I solve it in a right way ... but he want me to implement the "-" operator... insted of using the Del1 function ...
and I don't know how to implement this operator using the C++ syntax.

Can you do it for me.... ?

you write an overloaded operator.
change your function Del1 declaration to this

Code:

---

friend string operator-(string sor ,string dis);

---

I don't know if i got the syntax or whatever right (I don't have any materials to look it up and I'm to lazy too anyways) but you can look it up in the help files. But that should help point you in the right direction (look up : operator overloading, friend, operator.

cheers

Can I say that is the header of the " -" operator...
and inside it I should write what I did before...

Code:

---

friend string operator-(string sor ,string dis);

---

Question: Why it is Firend ?

And is this the way to write Using a Code tage right ... :( Tell me ?
Thanx...
you know step by step.... this is the way ... :)

How to do code tags 101 (follow the steps) words in " " is what you type.

1 - "["
2 - same line.. "code]"
3 - put in your code here...
4 - "["
5 - same line.. "\code]"

friend means it can be used by classes (ie string) if I remember correctly but look it up in the help it should say I don't have any of that here with me so I can not look it up.

Now I got it ...

:p to much Wiscky
:p Now I know how to do this ...