if a five-digit number is input through the keyboard, write a program to calculate the sum of its digits?

Question

how i add five digit number by using modulus. i am beginner. by using the example say 12345. reply me fast.

Answer 1

What language are you using? For C:

int number = 12345;
int sum = 0;
sum += number % 10;
sum += (number / 10) % 10;
sum += (number / 100) % 10;
sum += (number / 1000) % 10;
sum += number / 10000;

Answer 2

Google it and you will find so many answers like here.

Answer 3

are we really supposed to do your homework? AND its so trivial, if you do not know it, the homework is there so you learn how to do it.

Next step: do the inverse, implement atoi

Answer 4

Here are some exemples in Perl :

#!/usr/bin/perl -l
use strict;
use warnings;

my $in = 12345; #input number
my $m = 2;  # modulus

# gives the sum of the modulus of each digit
my $r = eval join'+',map{$_%$m}split(//,$in);
print $r; # 3

# gives the modulus of the sum of each digit
my $r2 = (eval join'+',split(//,$in))%$m;
print $r2; # 1

# same as the second one but with regex
$in =~ s/(\d)(?=\d)/$1+/g;
print eval($in)%$m; # 1

Answer 5

gets.to_i.to_s.chars.map(&:to_i).reduce(:+)

Note: works for an arbitrary number of digits, not just 5. Also, this doesn't use modulus. Why would you? Just split by digit and add them.