9.22作业1

#include<iostream>
using namespace std;
int main(){
    int x=8999;
    int value=x*1000/1000;
    cout<<"value="<<value<<endl;
    return 0;
}

 

 

 

#include<iostream>
using namespace std;
int main(){
	int x=8999;
	int value=x/1000*1000;
	cout<<"value="<<value<<endl;
	return 0;
}

　　

 

 

 

#include<iostream>
using namespace std;
int main(){
    int x=8999;
    int value=x/1000.0*1000;
    cout<<"value="<<value<<endl;
    return 0;
}