C++-交换器

[c++]代码库

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