How to get a decimal in value in the following program

[FaRsAnA]

#include<iostream.h>
#include<conio.h>
void main()
  {
   int a,b,c,d;
   float e;
   c=a+b;
   d=a-b;
   e=a/b;
   cout<<"sum="<<c;
   cout<<"diff="<<d;
   cout<<"quotient="<<e;
   getch();
   }

Assuming a=5 and b=2
I am not getting the quotient in decimals
then how to get the quotient in decimal value