help with modulus operator

[calistaird]

i have a program that i need to write that requires the following output:

"the entered value is "23557" it has 5 digits with the digit sum of 22.
the number of 5's in the value is 2."

i need help adding the digits together and telling the program to count the number of how many digits there are. i've been told to use the modulus operator but i just cant figure out how to execute this.


here is what i have so far

  #include <iostream>
#include <cmath>

long valueinput(long);


int main()
{
using namespace std;



long value, digits;

cout<< "enter value here: "<< endl;
cin>> value;

long givenvalue = valueinput(value);

digits=floor(log10(value))+1;
cout<< " the value entered is "<< value << " it has " << digits << " digits "<< " with the digit sum of " << givenvalue << endl;


system ("pause");
return 0;
}

long valueinput(long digits)
{
	return ;

}

[a3625799132]

when you do the modulus %, it will give you remainder.
using %:
in regular math, 23557/10 = 2355 remainder 7,
so that 23557% 10 = 7, then divide 23557/10 = 2355. (in C++, integer division will remove decimal).

then:
2355%10 = 5, then 2355/10 = 235. and so on, you will get all the digits.

set sum to 0, each time when you do modulus, you add the remainder to the sum.