USN 프로젝트

syntax on  //옵션이 가장중요!!!

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vi ~/.vimrc 이후에

set autoindent
set cindent
set smartindent
set number
set shiftwidth=3
set tabstop=3
set hlsearch
set wrap
set background=light
syntax on
set bs=2

그리고,

#include <iostream>

using namespace std;

class Point
{
private:
 int x,y;
public:
 Point(int _x=0, int _y=0):x(_x),y(_y){}
 void ShowPosition();
 Point operator+(int val);
// friend Point operator+(int val,Point& p);
};

void Point::ShowPosition()
{
 cout<<x<<"\t"<<y<<endl;
}

Point Point::operator+(int val)
{
 Point temp(x+val,y+val);
 return temp;
}

Point operator+(int val,Point& p)
{
 return p + val;
}

int main()
{
 Point p(3,5);
 p.ShowPosition();
 cout<<"-------------------"<<endl;
 Point p1=p+3;
 p.ShowPosition();
 p1.ShowPosition();
 /*cout<<"aa";*/
 cout<<"-------------------"<<endl;
/* cout<<"aa";*/
 Point p2=3+p;
// cout<<"aa";
 p.ShowPosition();
 p1.ShowPosition();
 p2.ShowPosition();
 return 0;
}