Untitled

#include<iostream>
using namespace std;
void rev_number(int *number);
int sum_of_digits(int number);

//playing with address
void swap_the_number(int *a,int *b){
	int temp=*(a);
	*(a)=*(b);
	*(b)=temp;
}

//call by value
int sum_of_digits(int number){
	int sum=0;
	while(number!=0){
		int digit=number%10;
		sum+=digit;
		number/=10;
	}
	return sum;
}

//main function
int main(void){
	int a,b;
	cout<<"Enter the value of a : ";
	cin>>a;
	cout<<"Enter the value of b : ";
	cin>>b;
	swap_the_number(&a,&b);
	cout<<"A = "<<a<<" B = "<<b<<endl;
}