9.22zuo

#include<iostream>
using namespace std;
int main(){
    int a=5,b;
    b=a++;
    cout<<b<<endl;
    return 0;
}

 

 

 

 

#include<iostream>
using namespace std;
int main(){
    int a=5,b;
    b=++a;
    cout<<b<<endl;
    return 0;
}