Power of a number

Write a program to find power of a number. should work with negative number as well.

#include<stdio.h>
long double Power_Calculate(int,int);
enum NumSignStatus{IS_POSITIVE,IS_NEGATIVE};
int main()
{
	int num1,num2;
	long double ans;
	printf("Enter First Value = ",ans);
	scanf("%d",&num1);
	printf("Enter Second Value = ",ans);
	scanf("%d",&num2);
	ans = Power_Calculate(num1,num2);
	printf("%d^%d = %Lf\n",num1,num2,ans);
	return 0;
}
long double Power_Calculate(int x,int y)
{
	long double p = 1,i;
	int XValue,YValue;
	XValue = IS_POSITIVE;
	YValue = IS_POSITIVE;
	if(x < 0)
	{
		x = -x;
		XValue = IS_NEGATIVE;
	}
	if(y < 0)
	{
		y = -y;
		YValue = IS_NEGATIVE;
	}
	for(i = 1;i <= y;i++)
	{
		p = p * x;
	}
	if(XValue == IS_POSITIVE)
	{
		if(YValue == IS_POSITIVE)
			return p;
		else
			return (1/p);
	}
	else
	{
		if(YValue == IS_POSITIVE)
		{
			if(y%2)
				return (-p);
			else
				return p;
		}
		else
		{
			if(y%2)
				return (-(1/p));
			else
				return (1/p);
		}
	}
}

Output

Enter First Value = 2
Enter Second Value = 5
2^5 = 32.000000

Enter First Value = 2
Enter Second Value = -5
2^-5 = 0.031250

Enter First Value = -2
Enter Second Value = 5
-2^5 = -32.000000

Enter First Value = -2
Enter Second Value = -5
-2^-5 = -0.031250