Add digits of number in c
C
programming code
#include <stdio.h>
int main()
{
int n, sum = 0, remainder;
printf("Enter an integer\n");
scanf("%d",&n);
while(n != 0)
{
remainder =
n % 10;
sum =
sum + remainder;
n = n / 10;
}
printf("Sum of digits of
entered number = %d\n",sum);
return 0;
}
Output of program:
Enter an integer
1234
Sum of digits of entered number =10
2. Add digits using recursion
#include <stdio.h>
int add_digits(int);
int main()
{
int n, result;
scanf("%d", &n);
result =
add_digits(n);
printf("%d\n", result);
return 0;
}
int add_digits(int n) {
static int sum = 0;
if (n == 0) {
return 0;
}
sum = n%10 + add_digits(n/10);
return sum;
}
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