Write a function power() to raise a number m to a power n. The function takes a double value for m and int value for n and returns the result correctly. Use a default value of 2 for n to make the function to calculate squares when this argument is omitted. Write a main that gets the values of m and n from the user to test the function.

#include <iostream.h>
#include <conio.h>
void main()
{
double power(double m,int n=2);
clrscr();
cout<<endl<<endl<<endl;
int choice,m,n;
double result;
do
{
cout<<"\n\n\nCHOICES\n\n";
cout<<"1)    Only Value of M\n";
cout<<"2)    Value for both M and N\n";
cout<<"3)    QUIT\n";
cout<<"ENTER YOUR CHOICE:-";
cin>>choice;
clrscr();
cout<<endl<<endl<<endl;
switch(choice)
{
    case 1 : cout<<"Enter Value for M:-";
               cin>>m;
            result=power(m);
            cout<<"Power function when default argument is used ="<<result;
            break;
   case 2 : cout<<"Enter Value for M and N:-";
               cin>>m>>n;
            result=power(m,n);
            cout<<"Power function when actual argument is use ="<<result;
            break;
   case 3 : goto out;
   default: cout<<"Entered Value is Invalid, Try again";
}
}while(choice!=3);
out:
}


double power(double m,int n)
{
double pow=1,k=0;
for(int i=0;i<n;i++)
{
pow=pow*m;
}
return(pow);
}