Is there an alternative to declaring a variable inside a for loop?

Question

I am trying to count the number of odd values in the elements of the array. Is there a way to perform the below operation without declaring a variable inside the for loop? I am aware that the variable declared inside the loop cannot be accessed outside the loop and I want to know if there is a way that the following loop is performed and the value of oddValueCountKS could be accessed outside of the loop.

int arr[3] = {1004, -237890, 30022};
     
for (int i = 0; i < 3; i++) {
  int oddValueCountKS = 0;
         
  while (arr[i] != 0) {
    if (arr[i] % 2) {
      oddValueCountKS++;
    }
    arr[i] /= 10;
  }
}

You already declared one variable outside of the loop: `arr`. It's unclear why you think you can't do the same thing with this one? — Sam Varshavchik, Oct 07 '20 at 03:32
Declare it outside the loop and then just assign 0 inside the loop it that is what you want. — Jerry Jeremiah, Oct 07 '20 at 03:33
You said you want to count the amount of odd values, but that's not what your code is doing. — Nikos C., Oct 07 '20 at 03:44

score 1 · Answer 1 · answered Oct 07 '20 at 05:32

1

int arr[3] = {1004,-237890,30022};
int oddValueCountKS[3] = {0};
 
 for (int i = 0; i < 3; i++) {

     while (arr[i] != 0) {

         if (arr[i] % 2) {
             oddValueCountKS[i]++;
         }
         arr[i] /= 10;
        
     }
    
 }

answered Oct 07 '20 at 05:32

Ok MrJin

11
3

score 0 · Answer 2 · answered Oct 07 '20 at 03:38

0

Declare it outside the loop

int oddValueCountKS;
for (int i = 0; i < 3; i++) {
    oddValueCountKS = 0;
    //the rest of your code
}

this way you will be able to access it outside

answered Oct 07 '20 at 03:38

Maz

11
4

This will only give access to the `oddValueCountKS` calculated for `i == 2` the information for `i<2` is lost, so those steps of the loop are kinda useless. – t.niese Oct 07 '20 at 07:15

Is there an alternative to declaring a variable inside a for loop?

2 Answers2