Program for Summation,Subtraction,Multiplication,Average

#include<iostream.h>
#include<conio.h>
int main()
{
 clrscr();
 int a,b,sum,sub,mult,avg;
 cin>>a>>b;
 sum=a+b;
 sub=a-b;
 mult=a*b;
 avg=(a+b)/2;
 cout<<sum<<sub<<mult<<avg;
 getch();
}