Cprogram-add all num using recursion:67=6+7=output=1+3=4. The code output is correct!! this recursion method is correct or not??

Question

#include <stdio.h>
int jansi(int a)
{
if((a/10)!=0)
{
return (a%10)+jansi(a/10);
}
else
{
return a;
}
}
int main()
{
int a,value;
scanf("%d",&a);
value=jansi(a);
while( value/10!=0)
{
value=jansi(value);
}
printf("%d",value);
return 0;
}

Answer 1

Until become single digit number.. Yes thats what you trying.. Is not it..?
67=> 6+7=13=>1+3=4.

Answer 2

You can check in the playground by saving code and running it..?
Do you have any difficulty in that..?

Just try to remove warning....

Answer 3

Ok thank you 🔥🔥

Answer 4

The code output is correct!! But,this recursion method is correct or not?? because,calling the function is continuing till the value becomes 1 digit number!!

Check and tell me!!

Answer 5

Yes

Answer 6

Yes, it works well. Just remove the two unused variables b and sum in jansi() in order to be compilable in SoloLearn.