program to count number of digits in c code example

Example 1: c how many digits has a number

digits = (number == 0) ? 1 : (log10(number) + 1);
//or
while (number > 0)
{
	number /= 10;
	digits++;
}
//see: https://ideone.com/P1h8Ne

Example 2: how to count digits and sum of digits in C

Enter the number
300
Given number = 300
Sum of the digits 300 = 3
 
 
Enter the number
16789
Given number = 16789
Sum of the digits 16789 = 31