//객체지향 2012/04/13 2번

#include<iostream>

using namespace std;

int add_up(int n)
{
	int i, result = 0;
	
	for(i=1; i < n+1 ; i++)
	{	result += i;	}
	
	return result;
};

int main()
{
	int i,num,result=0;

	while(1)
	{	cout << "how many?( 2~)";
		cin >> num;
		if(num >=2){break;}
	}

	for(i=2; i <= num ; i++)
	{	
		result +=add_up (i-1);
		cout << result << "+" << add_up(i)	<<" = "<< result+add_up(i) << endl;	
	}
	

	return 0;


}
 

Line 15: error: extra ';'
compilation terminated due to -Wfatal-errors.