C++ program to write a function power() to raise a number m to a power n and taking default n value as 2

#include < iostream.h>
#include < stdlib.h>

float power(double m,int n=2)

{

int i;

double result=1;

for(i=0;i< n;i++)

result*=m;

return result;

}

void main()

{

double num,res;

int powr;

cout<< " enter the number\n";

cin>>num;

cout<< " enter the power\n";

cin>>powr;

res=power(num,powr);

cout<< " the result is ----> "<< res;

}