stili

#include<iostream>
using namespace std;

int main (){
    int arr_size = 3;
    int nums[arr_size];

    for(int i = 0; i < arr_size; i++){
        do{
            cout << i << " :";
            cin >> nums[i];
        }while (nums[i]<99 || nums[i]>1000);
    }

    for(int i = 0; i < arr_size; i++){
        int curr, ed, des, stot;
        curr = nums[i];
        ed = curr % 10;
        curr /= 10;
        des = curr % 10;
        curr /= 10;
        stot = curr % 10;

        if (ed + stot == des)
        {
            cout << nums[i] << endl;
        }

    }

}