20.22. Write a program that read any positive integer and display sum of its digit.

#include<stdio.h>
#include<conio.h> 

#include<stdlib.h>
void main ()

{
int *n,*sum;

n=(int *)malloc(sizeof(int));

sum=(int *)malloc(sizeof(int));

clrscr();
printf("Enter any number: ");

scanf("%d", n);

*sum=0;

while(*n>0)

{

*sum=*sum+*n%10;

*n=*n/10;

}

printf("Sum of digits =%d",*sum);
getch ();
}