Beautiful days at the movies Hackerrank solution in c

#include<stdio.h>

#include<stdlib.h>

#include<math.h>

int main()

{

int i,j,k;

scanf("%d %d %d",&i,&j,&k);

int c=0;

for(int t=i;t<=j;t++)

{

int p=t;

int sum=0;

while(p>0)

{

sum=sum*10+(p%10);

p=p/10;

}

if(abs(t-sum)%k==0)

c++;

}

printf("%d",c);

return 0;

}