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Program 2: Using * and /

Let's see another example to swap two numbers using * and /.

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#include <iostream>  

using namespace std;  

int main()  

{  

int a=5, b=10;      

cout<<"Before swap a= "<<a<<" b= "<<b<<endl;      

a=a+b; //a=15 (5+10)    

b=a-b; //b=5 (15-10)    

a=a-b; //a=10 (15-5)    

cout<<"After swap a= "<<a<<" b= "<<b<<endl;      

return 0;  

}  

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