include stdio include stdlib include math run this program using the c

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	double H, K, D;
  do
  {
  
  printf("K=");
  scanf("%lf=", &K);
  }
  while (K<=0);
   do
  {
  
  printf("H=");
  scanf("%lf=", &H);
  }
  while (H<=0);
  
  do
  {
  
  printf("D=");
  scanf("%lf=", &D);
  }
  while (D<=0);
  
  
  
  K=2*(sqrt(M_PI * K));
  H*=3/sqrt(0.75*H); 
  D=sqrt(8*D);
   if (K>H)
{
    if (K>D)
     printf("Perimetr kruga bolshe ");
    else
     printf("Perimetr kvadrata bolshe ");
}
   else
    if (H>D)
     printf("Perimetr treugolnika bolshe ");
    else
     printf("Perimetr kvadrata bolshe "); 
       system("PAUSE"); 
	return 0;
}