C++中的运算符重载

/*
 * 运算符重载：函数重载的一种。
 */
#include <iostream>
using namespace std;

typedef struct
{
      double dx;
      double dy;
}S;

S operator+(S s1, S s2)
{
      S s3;
      s3.dx = s1.dx + s2.dx;
      s3.dy = s1.dy + s2.dy;
      return s3;
}

int main(int argc, char **argv)
{
      S s_1 = {1.1, 2.2};
      S s_2 = {3.3, 4.4};
      S s_3 = s_1 + s_2;
      cout << s_3.dx << endl << s_3.dy << endl;
      return 0;
}

 

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