Bon Appétit.c-HackerRank

Problem-Anna and Brian are sharing a meal at a restaurant and they agree to split the bill equally. Brian wants to order something that Anna is allergic to though, and they agree that Anna won't pay for that item. Brian gets the check and calculates Anna's portion. You must determine if his calculation is correct.

Solution-

#include <assert.h>

#include <ctype.h>

#include <limits.h>

#include <math.h>

#include <stdbool.h>

#include <stddef.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int main()

{

  int n,k,sum=0,i,sum2=0;

  int price=0,extra=0;

  scanf("%d %d",&n,&k);

  int arr[n];

  for(i=0;i<n;i++)

  {

      scanf("\n%d ",&arr[i]);

  }

  int charge;

  scanf("\n%d",&charge);

  for(i=0;i<n;i++)

  {

      sum=sum+arr[i];

  }

  sum2=sum-arr[k];

  price=sum2/2;

  if(price==charge)

      printf("Bon Appetit");

  else

  {

      extra=charge-price;

      printf("%d",extra);

  }

  return 0;

}

Link to the problem:-

https://www.hackerrank.com/challenges/bon-appetit/problem