swap in cpp
int a{}, b{}, temp{};
cin >> a >> b;
//===================== METHOD-1
temp = a;
a = b;
b = temp;
//===================== METHOD-2 ( XOR ^ )
// example: a^b = 5^7
a = a ^ b; // 5^7
b = a ^ b; // 5 ^ 7 ^ 7 //5 ( 7 & 7 dismissed)
a = a ^ b; // 5 ^ 7 ^ 5 //7 ( 5 & 5 dismissed)
//===================== METHOD-3 ( swap() )
swap(a, b);
cout << "a " << a << endl;
cout << "b " << b << endl;what did swap method return in c++
Return Value: The function does not return anything, it swaps the values of the two variablesc++ swap function
int main()
{
int a = 5;
int b = 10;
swap(a, b);
cout << "a = " << a << endl;
cout << "b = " << b << endl;
}Copyright © 2021 Codeinu
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