How do you swap values between two objects in C++?

Create a class Swap, declare three variables in it, i.e., a, b, and temp and create a constructor for inputs. Declare a friend function in it. Define the friend function outside the class scope by taking arguments as call by reference to pass the copy of Swap Object. Perform the swap operation with Swap variables.

Which is the correct way to swap value of two variables?

The bitwise XOR operator can be used to swap two variables. The XOR of two numbers x and y returns a number that has all the bits as 1 wherever bits of x and y differ. For example, XOR of 10 (In Binary 1010) and 5 (In Binary 0101) is 1111 and XOR of 7 (0111) and 5 (0101) is (0010).

Is XOR swap faster?

On modern CPU architectures, the XOR technique can be slower than using a temporary variable to do swapping. At least on recent x86 CPUs, both by AMD and Intel, moving between registers regularly incurs zero latency.

Is there a swap function in C++?

swap() in C++ The function std::swap() is a built-in function in the C++ Standard Template Library (STL) which swaps the value of two variables.

How can I change values in C++ without third variable?

C++ Program to swap two numbers without third variable

1. #include
2. using namespace std;
3. int main()
4. {
5. int a=5, b=10;
6. cout<<“Before swap a= “<
7. a=a+b;//a=30 (10+20)
8. b=a-b;//b=10 (30-20)
9. a=a-b;//a=20 (30-10)

How do you swap two variables without using third?

Program to swap two numbers without using the third variable

1. STEP 1: START.
2. STEP 2: ENTER x, y.
3. STEP 3: PRINT x, y.
4. STEP 4: x = x + y.
5. STEP 5: y= x – y.
6. STEP 6: x =x – y.
7. STEP 7: PRINT x, y.
8. STEP 8: END.

How do you swap in C++?

Here is the syntax of swap() in C++ language, void swap(int variable_name1, int variable_name2); If we assign the values to variables or pass user-defined values, it will swap the values of variables but the value of variables will remain same at the actual place.