编辑代码

#include <iostream>
using namespace std;
int main() {
    int a;
    int a1;
    int a2;
    int result;
    cout << "输入10—99数:" << endl;
    cin >> a;
    if(a % 2 != 0) {
        if(a <= 99) {
            if(a >= 10) {
                    a1 = a / 10;
                    a2 = a % 10;
                    result = a1 + a2;
                    if(result == 9) {
                        cout << "Yes" << endl;
                    } else {
                        cout << "No" << endl;
                    }
            }
        }
    }    
    return 0;
}