1#include <stdio.h>
2#include <string.h>
3
4int findNumbers(int* nums, int numsSize) {
5    int count = 0;
6    for (int i = 0; i < numsSize; i++) {
7        char str[10];
8        sprintf(str, "%d", nums[i]);
9        if (strlen(str) % 2 == 0) {
10            count++;
11        }
12    }
13    return count;
14}
15
16int main() {
17    int nums[] = {12, 345, 2, 6, 7896};
18    int size = sizeof(nums) / sizeof(nums[0]);
19    printf("%d\n", findNumbers(nums, size));
20    return 0;
21}

1#include <iostream>
#include <vector>
#include <cmath>
using namespace std;

int findNumbers(vector<int>& nums) {
    int count = 0;
    for (int num : nums) {
        if (static_cast<int>(log10(num)) % 2 == 1) {
            count++;
        }
    }
    return count;
}

int main() {
    vector<int> nums = {12, 345, 2, 6, 7896};
    cout << findNumbers(nums) << endl;
    return 0;
}