镇乃天子

666/交换2.cpp

@@ -0,0 +1,13 @@
+#include<iostream>
+using namespace std;
+int main(){
+
+   int a,b,c; 
+    cin>>a>>b;
+    cout<<a<<"  "<<b<<"  ";
+    c=a;
+    a=b;
+    b=c;
+    cout<<a<<"  "<<b<<endl;
+    return 0;
+}