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  1. #include <cstdlib>
  2. #include <iostream> 
  3. using namespace std;
  4. ////////////////////////////////////////////////////////////////
  5. ////////////////////////////////////////////////////////////////CVector3
  6. class CVector3{
  7.     private:
  8.         double x;
  9.     public:
  10.         CVector3();
  11.         double getX();
  12.         void setX(double);         
  13. };
  14. CVector3::CVector3(){
  15.     x=0;
  16. }
  17. double CVector3::getX(){
  18.     return x;
  19. }
  20. void CVector3::setX(double newX){
  21.     x=newX;
  22. }
  23. ////////////////////////////////////////////////////////////////
  24. ////////////////////////////////////////////////////////////////CForce
  25. class CForce{
  26.     private:
  27.         CVector3 f1;
  28.     public:
  29.         CForce();
  30.         CVector3 getF1();
  31.         //void setF1();         
  32. };
  33. CForce::CForce(){
  34.     f1.setX(0);
  35. }
  36. CVector3 CForce::getF1(){
  37.     return f1;
  38. }
  39. ////////////////////////////////////////////////////////////////
  40. ////////////////////////////////////////////////////////////////
  41. int main(int argc, char *argv[])
  42. {
  43.     CVector3 v1,v2;
  44.     v1.setX(3);
  45.     printf("v1.x = %0.2lf\n",v1.getX());
  46.  
  47.     CForce F;
  48.     //printf("v1.x=%0.2lf\n",F.getF1.getX()); //編譯錯誤 insufficient contextual information to determine type 
  49.     v2=F.getF1();
  50.     printf("v2.x = F.f1.x = %0.2lf\n",v2.getX());
  51.     system("PAUSE");
  52.     return EXIT_SUCCESS;
  53. }
Success #stdin #stdout #stderr 0s 3296KB
comments (?)
stdin 
Standard input is empty
stdout 
v1.x = 3.00
v2.x = F.f1.x = 0.00
stderr 
sh: PAUSE: not found
https://ideone.com/SZg3Uf
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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