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  1.     #include <cstdlib>
  2.     #include <iostream>
  3.     #include <cmath>
  4.     using namespace std;
  5.  
  6.  
  7.     struct Vect {
  8.     double x,y;
  9.      };
  10.  
  11.      void print(Vect c){
  12.      cout<<c.x<<","<<c.y<<endl;
  13.      }
  14.  
  15.      Vect summ(Vect  a,Vect b){
  16. 		Vect  c;
  17. c.x=a.x+b.x;
  18. c.y=a.y+b.y;
  19. return   c;
  20.     }
  21.  
  22.     int main(){
  23.     //объявим переменные типа Vect
  24.     Vect a,b,c;
  25.     cout<<"введем координаты первого вектора"<<endl;
  26.     cin>>a.x;
  27.     cin>>a.y;
  28.  
  29.     cout<<"введем координаты второго вектора"<<endl;
  30.     cin>>b.x;
  31.     cin>>b.y;
  32.  
  33.     summ( a, b);
  34.     print (c);
  35.  
  36.     cout<<"|a+b|= "<<sqrt((a.x+b.x)*(a.x+b.x)+(a.y+b.y)*(a.y+b.y))<<endl;
  37.  
  38.     cout<<"|a-b|= "<<sqrt((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y))<<endl;
  39.     cout<<"|a*3| "<< sqrt((a.x*3)*(a.x*3)+(a.y*3)*(a.y*3))<<endl;
  40.  
  41.  
  42.  
  43.     return 0;
  44.     }
  45.  
Success #stdin #stdout 0s 3300KB
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stdin
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Standard input is empty
stdout
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введем координаты первого вектора
введем координаты второго вектора
1.52145e-314,-1.62325e-41
|a+b|= 1.18615
|a-b|= 1.18615
|a*3| 1.17942e-40
https://ideone.com/p6pxRh
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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