#include <iostream> using namespace std; int main() { int sum1 , sum2 ; for (size_t i = 1000; i <= 9999; i++){ sum1 = (i / 1000) + ((i % 100) / 10); sum2 = (((i / 100) % 10 ) + (i % 10)); if (sum1 == sum2){ cout << "sum(1+3) = " << sum1 << endl ; cout << "sum(2+4) = " << sum2 << endl ; cout << "In mumber = " << i << endl ; cout << "======================" << endl ; } sum1 = 0 ; sum2 = 0 ; } return 0; }