HHW CTOR AND DTOR (3)

#include<iostream.h>
#include<stdlib.h>
void amount(float princ,int time =2,float rate =0.08);
void amount(float princ,int time,float rate)
{
cout<<"\nprincipal amount : rs."<<princ;
cout<<"\ttime:"<<time<<"years";
cout<<"\trate : "<<rate;
cout<<"\n interest amount : "<<(princ*rate*time)<<"\n";
}
int main()
{
cout<<"case 1 ";
amount(2000);
cout<<"case 2 ";
amount(2500,3);
cout<<"case 3 ";
amount(2300,3,0.11);
cout<<"case 4 ";
amount(2500,0.08);
return 0;
}