FY_BCA_C_SLIP 24_2

Slip no : 24_2 write a C prog to calculate sum of digit till it reduces to single digit using recursion

#include<stdio.h>

#include<conio.h>

 int getSum(int n)

{

static int sum=0;int no;

if(n>0)

{

sum = sum + n%10; getSum(n/10);

}

else if(sum>=10) { no=sum;

sum=0;

getSum(no);

}

return sum;

}

main()

{

int n,sum;

printf("Enter the value of n: "); scanf("%d",&n);

sum = getSum(n);

printf("Sum of n numbers: %d",sum);

getch();

}