#include <iostream.h> #include <conio.h> const size = 3; class vector { int v[size]; public: vector(); vector (int *x); friend vector operator * (int a,vector b); friend vector operator * (vector b,int a); friend istream & operator >> (istream &,vector &); friend ostream & operator << (ostream &,vector &); }; vector :: vector() { for(int i=0;i<size;i++) v[i]=0; } vector :: vector(int *x) { for(int i=0;i<size;i++) v[i]=x[i]; } vector operator * (int a,vector b) { vector c; for(int i=0;i<size;i++) c.v[i]=a * b.v[i]; return(c); } vector operator * (vector b,int a) { vector c; for(int i=0;i<size;i++) c.v[i]=b.v[i] * a; return(c); } istream & operator >> (istream & din,vector & b) { for(int i=0;i<size;i++) din>>b.v[i]; return(din); } ostream & operator << (ostream & dout,vector & b) { dout<<\"(\";//<<b.v[0]; for(int i=0;i<size;i++) dout<<\", \"<<b.v[i]; dout<<\")\"; return(dout); } int x[size] = {2,4,6}; void main() { clrscr(); vector m; vector n=x; cout<<\"Enter elements of vector m \\n\"; cin>>m; cout<<endl; cout<<\"m=\"<<m<<endl; vector p,q; p=2*m; q=n*2; cout<<endl; cout<<\"p=\"<<p<<endl; cout<<\"q=\"<<q<<endl; getch(); }