WAP to find the sum of digit of the number

Write a program to find the sum of digit of the number using while loop

include<stdio.h>

void main() {
	int n,sum=0,last;
	printf("Enter any number: ");
	scanf("%d",&n);
	while(n>=10) {
		last=n%10;
		sum+=last;
		n/=10;
	}
	sum+=n;
	printf("The Sum of digits is %d",sum);
}

Output

Enter any number: 234
The Sum of digits is 9

Behind the scene

2 + 3 + 4 = 9

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