how to seperate a string into characters?

[JR]

Hi,
I have a file which contains some characters data, for example the first line is:

5 3

my question if i read the line as a string, how would i separate both characters? there are spaces in between.
like how would i put those 2 numbers into different variables.

[wtd]

Try using the String class' split method.

[JR]

what is the name of the function that does that?

[wtd]

Err... for some reason I was thinking this was in the Java Help forum.

As for C++, use the std::stringstream class.

[abcdefghijklmnopqrstuvwxy]

If everything is seperated by spaces you could use the extraction operator.

code:

int x, y; ifstream in("file.txt"); while (in >> x) {    in >> y;    //do something with x    //do something with y }

What that does is put the first number into x and the second number into y. Asserting that first and second num are seperated by a space.

[JR]

abcdefghijklmnopqrstuvwxy @ Mon Feb 05, 2007 2:54 pm wrote:

If everything is seperated by spaces you could use the extraction operator.

code:

int x, y; ifstream in("file.txt"); while (in >> x) {    in >> y;    //do something with x    //do something with y }

What that does is put the first number into x and the second number into y. Asserting that first and second num are seperated by a space.

some of the data in the file has no spaces, so that would not work properly i guess.

[deville75]

Why not use a char array? an array of chars already stores each character so you don't need a method. Also you can check each value char[0], char[1], ... for it's value to see if it's a space or not. So instead of reading it into a string read it into a char [].

[wtd]

Because he's dealing with C++, and has a real string type to work with, as a result.

C++'s std::string class can be iterated over in the same manner.

[abcdefghijklmnopqrstuvwxy]

I was going to mention how senseless it would be to use a char* but I figured since the advantage of std::string is covered so exhaustively in this forum and elsewhere on the net I wouldn't waste my finger muscles.

[ownageprince]

string word="program";
char ch;
for(int i=0;i<word.length();i++)
{
ch=word[i];
cout<<ch<<endl;
}

//this stores each character from word into ch...but after the for loop you will only have "m"

[wtd]

code:

#include <iostream> #include <string> #include <iterator> int main() {    std::string foo = "foo bar";        std::copy(foo.begin(), foo.end(),              std::ostream_iterator<char>(std::cout, ""));    std::cout << std::endl; }