Thread: split number in two..

substr() ?

You can use 'stringstreams':

Code:

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

using namespace std;

int main()
{
	int num = 123456;

	//Turn num into a string:
	ostringstream myOutputStr;
	myOutputStr<<num;
	string myStr = myOutputStr.str();
	
	//Get a substring of num:
	string str1 = myStr.substr(0,2);
	
	//If you need to, turn the substring into an int:
	istringstream myInputStr(str1);
	int num1 = 0;
	myInputStr>>num1;
	
	//Display the result:
	cout<<num1<<" * 2 = "<<num1 * 2<<endl;
	
	return 0;
}

Is using stringstreams better (faster) then using itoa and atoi to convert integers to strings and the way arround?

itoa() isn't part of the C++ standard. MS made it up.

atoi is part of C89...