forked from s444409/POB_2019
59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
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#include <iostream>
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#include <string>
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#include <sstream>
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using namespace std;
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class Vec2 {
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private:
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int x,y;
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public:
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Vec2(int _x, int _y){
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x=_x;
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y=_y;
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}
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string toString(){
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stringstream s;
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s << "[" << x << ", " << y << "]";
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return s.str();
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}
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friend Vec2 operator+(const Vec2& vec1, const Vec2& vec2){
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return Vec2(vec1.x+vec2.x, vec1.y+vec2.y);
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}
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friend Vec2 operator-(const Vec2& vec1, const Vec2& vec2){
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return Vec2(vec1.x-vec2.x, vec1.y-vec2.y);
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}
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Vec2& operator+=(const Vec2& vec){
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x=vec.x+x;
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y=vec.y+y;
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return *this;
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}
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Vec2& operator-=(const Vec2& vec){
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x=vec.x-x;
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y=vec.y-y;
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return *this;
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}
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friend float operator*(const Vec2& vec1, const Vec2& vec2){
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return (float)vec1.x*vec2.x + (float)vec1.y+vec2.y;
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}
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bool operator==(const Vec2& vec){
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if(x==vec.x && y==vec.y) return 1;
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else return 0;
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}
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bool operator!=(const Vec2& vec){
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if(x==vec.x && y==vec.y) return 0;
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else return 1;
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}
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};
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int main(){
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Vec2 vec1 = Vec2(5,1);
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Vec2 vec2 = Vec2(3,4);
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Vec2 vec3 = vec1 + vec2;
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cout << vec3.toString() << endl;
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vec3+=vec2;
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cout << vec3.toString() << endl;
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vec3-=vec1;
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cout << vec3.toString() << endl;
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cout << vec3*vec2 << endl;
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}
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