Question

write a program to print the value of two integers before and after swapping without using a third variable​

Answer 1

Answer:

#include <iostream.h>      

int main()  

{  

int a=5, b=10;      

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

a=a*b; //a=50 (5*10)    

b=a/b; //b=5 (50/10)    

a=a/b; //a=10 (50/5)    

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

return 0;  

}  

Output:

Before swap a= 5 b= 10      

After swap a= 10 b= 5