split c++ string

[jamesjohn]

I have this string d ="3 J JD, K" and i want to split the string to individual string. I have this code which eliminates the comma but doesn't split the string into individual string.

#include <iostream> 
#include <string>
#include <sstream>

using namespace std; 
int main()
{ 
   string str = "3   J     JD,K";
   stringstream ss(str);

   string token;

while (getline(ss,token, ','))
{
    cout<< token <<endl; 
}

 
   return 0;
}
 

Output of the code is

3   J   JD
k

but I want

3
J
JD
K

Also after I split the string is there any way to put the split string into individual string variables.

[LB]

Since your delimiter here is spaces, all you have to do is replace the comma with a space, then use a std::istringstream to extract each token into a new string.

[jamesjohn]

thanks for the reply. When i replace the comma with space then the output is

3 
J 
JD,K

I need the output to be

3 
J 
JD
K

Also can you give me an example for istringstream

[Duthomhas]

You also have to change the comma in the string to a space.

[jamesjohn]

i can't change the comma into a space because i am reading this string from a file then i want to split the string and take out the comma

[cire]

i can't change the comma into a space because i am reading this string from a file then i want to split the string and take out the comma

Read the string in from the file.
Remove the comma (by replacing it with a space) from the string you read in.
Split the string.

[onlytheweb]

string str = "3   J     JD,K";
// replace the comma with an empty space
replace(str.begin(), str.end(), ',', ' ');
stringstream ss(str);
string token;

while (getline(ss, token, ' '))
{
//etc. etc. 

[hungduongn]

You should use strtok()

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

using namespace std; 

int main() {
   string str = "3   J     JD,K";
   char* pch = strtok(str, " ,");
   cout<<pch<<endl;
   while(pch != NULL) {
       pch = strtok(NULL," ,");
       cout<<pch<<endl;
   }
   return 0;
}

[Disch]

   string str = "3   J     JD,K";
   char* pch = strtok(str, " ,");

This will not work because strtok takes a char* as a parameter, and not a std::string. Mixing C string functions with std::string is generally a bad idea.

[Duthomhas]

Using strtok() is generally a bad idea.