program in c++ to find the sum of all digits of a given number

Program in C++ to find the sum of all digits of a given number

#include<iostream>
#include<conio.h>
 using namespace std;
  void main()
   {
     int n;
     cout<<"Enter a number:";
     cin>>n;
      int sum=0;
      while(n!=0)
      {
          sum=sum+n%10;
          n=n/10;
      }
    cout<<"Sum of all digits="<<sum;
    getch();
   }

Output:-

Program in C++ to find the sum of all digits of a given number using Function

#include<iostream>
#include<conio.h>
 using namespace std;
 int SumDigit(int );
  void main()
   {
     int x;
     cout<<"Enter a number:";
     cin>>x;
     cout<<"Sum of all digits="<<SumDigit(x);
    getch();
   }
   int SumDigit(int n)
    {
      int sum=0;
      while(n!=0)
      {
          sum=sum+n%10;
          n=n/10;
      } 
      return (sum);
  }

Output:-