Write a program that take a number from user consisting of 3 digit and print the sum of all digit

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int n,a,b,c,d;

printf"Enter 4-digit number:\n");

scanf("%d",&n);

b=n/1000;

n=n%1000;

c=n/100;

n=n%100;

d=n/10;

n=n%10;

printf("The inverse order is %d%d%d%d",n,d,c,b);

getch();

}