西安交通大学915-2020-编程1

#include <iostream>
using namespace std;

int main() {
    for (int i = 0; i <= 9999; i++) {
        int a = i / 1000;
        int b = i % 1000 / 100; 
        int c = i % 100 / 10;
        int d = i % 10;

        int t = c * 1000 + a * 100 + d * 10 + b;
        if (t + i == 9102) {
            printf("a = %d, b = %d, c = %d, d = %d\n", a, b, c, d);
        }
    }
    return 0;
}