How to find length of the inside array particular element

general
1

int arr[]={11,22222,22,33,444444};
int n=arr[1].length();
int n1=arr[4].length();
//i want to find length of the {22222} number inside the array
is this correct if not how to find length of the particular elements.

2

length=0
number=22222
while(number>0)
{
length++;
number=number/10;
}

when the while loop exits the length variable contains the length of number(22222) i.e. 5

3

there is a easier way, if the numbers inside your array are != 0 (its a special case), just do the next calc.

length_ith = floor(log10(abs(arr[ith]))) + 1

4

len=0;
number=22222;
while(number>0)
{
number=number/10;
len++;
}
//so length of the number is len,i.e 5.