c++ programming

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#include<iostream.h>
#include<conio.h>
void main(){
clrscr();
int pow,num,i=1;
long int sum=1;
cout<<"\nEnter a number: ";
cin>>num;
cout<<"\nEnter power: ";
cin>>pow;
while(i<=pow){
sum=sum*num;
i++;
}
cout<<"the power of number is "<<sum;
getch();
}