Piramidal sort

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stddef.h>
#include <time.h>

int randomazer (int max, int min){
	float random;
 	random = rand();
 	random = (random / RAND_MAX) * (max-min) + min;
 	return((int)random);
}

void swap (int *a1, int *a2)
{
  int tmp = *a1;
  *a1 = *a2;
  *a2 = tmp;
}


int main (void){
	srand(time(NULL));
	int N, i, k1, k2, note;
	scanf ("%d", &N);
	int x[N+1];
	for (i=0 ; i<N ; i++){
    	x [i] = randomazer (0, 100);
		printf ("%d ", x[i]);
	}

	k1 = (N-2)*5;
	k2 = (N-3)*5;

	if (k1%10 == 0){
		i = k1/10;
		note = 1; //only left
	}
	if (k2%10 == 0){
		i = k2/10;
		note = 2; //left and right
	}

	printf ("\n %d \n", i);

	if (note == 2){
		while (i != 0){

			if ((a[i]<a[2*i+1])||(a[i]<a[2*i+2])){
				if (a[2*i+1]>=a[2*i+1]){
					swap (&a[i], &a[2*i+1]);
					//again this function while

				}
				else{
					swap (&a[i], &a[2*i+2]);
					//again this function
				}
			}

			i--;
		}

	}

	if(note == 1){


	}


	return 0;
}