Answer Posted / t. ashok kumar

//Sum of digits of a number.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n,r,m;
int s=0;
cout<<"Sum of digits of a number:-\n";
cout<<"Enter the number: ";
cin>>n;
m=n;
repeat:
while (n>0)
{
r=n%10;
s=s+r;
n=n/10;
}
if(s>9)
{
n=s;
s=0;
goto repeat;
}
cout<<"Sum of digits of the number "<<m<<" is "<<s;
getch();
}

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