#include <iostream>
#include <algorithm>
#include <string>

int main() {
	std::string str = "		    		            abc";
	std::cout << "->" << str << "<-" << std::endl;
	
	size_t startpos = str.find_first_not_of(" \t");
	if( std::string::npos != startpos )
	{
    	str = str.substr( startpos );
	}
	
	std::cout << "->" << str << "<-";
	return 0;
}