Write a program which calculates expression $$N ^ N$$ where $$N$$ is an integer value filled by the user.

#include <stdio.h>

void main()
{
	int  N; 
	int  I; 
 	double RESULT; 

 
	do
    	{
      		printf("Entrez N : ");
     		scanf("%d", &N);
    	}while (N<0);
 
 	/* for N=0, the result is N^0=1 */
 	for (RESULT=1.0, I=1 ; I<=N ; I++)
        	RESULT*=N;
 
 	/* Attention: N=0 , 0^0 is undefined */
 	if (N==0)
     		printf("zero exponant zero is undefined !\n");
 	else
     		printf("Result : %d ^ %d = %.0f\n", N, N, RESULT);

	return 0;
}