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  1. #include <iostream> // même comportement avec printf
  2. #include <cmath> // même comportement avec les fonctions C (sqrt et pow)
  3.  
  4. struct Elem
  5. {
  6.     double x;
  7.     double y;
  8. };
  9.  
  10. double distance(Elem e1, Elem e2)
  11. {
  12.     return std::sqrt(std::pow(e1.x+0.0-e2.x,2)+std::pow(e1.y+0.0-e2.y,2));
  13. }
  14.  
  15. double distance_ptr(Elem* e1, Elem* e2)
  16. {
  17.     return std::sqrt(std::pow(e1->x+0.0-e2->x,2)+std::pow(e1->y+0.0-e2->y,2));
  18. }
  19.  
  20. int main()
  21. {
  22.     Elem e1={0,0};
  23.     Elem e2={std::cos(2.0),std::sin(2.0)};
  24.     {// "OK" est printé
  25.         double d=distance(e1,e2);
  26.         if(d==1.0)
  27.             std::cout<<"1. OK"<<std::endl;
  28.         else
  29.             std::cout<<"1. KO"<<std::endl;
  30.     }
  31.     {
  32.         double d=distance_ptr(&e1,&e2);
  33.         if(d==1.0)
  34.             std::cout<<"2. OK"<<std::endl;
  35.         else
  36.             std::cout<<"2. KO"<<std::endl;
  37.     }
  38.     {
  39.         double d=distance_ptr(&e1,&e2);
  40.         std::cout<<"result: "<< d <<std::endl;
  41.         if(d==1.0)
  42.             std::cout<<"3. OK"<<std::endl;
  43.         else
  44.             std::cout<<"3. KO"<<std::endl;
  45.     }
  46.     return 0;
  47. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
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Standard input is empty
stdout
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1. OK
2. KO
result: 1
3. OK
https://ideone.com/sIonkH
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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