c++作业3 9.22

#include <iostream>
using namespace std;
int main(){
int a=3,b;
b=a++;
cout<<"a="<<a<<", b="<<b;
return 0;
}

#include <iostream>
using namespace std;
int main(){
int a=3,b;
b=++a;
cout<<"a="<<a<<", b="<<b;
return 0;
}