In this programming example, we will swap two numbers in C++ using call by reference and call by address. in this cpp swap using Numbers Call by Reference. The swap () function is used to swap two numbers.
C++ Program to swap two numbers without third variable We can swap two numbers without using third variable.Exchanges the values of two strings Exchanges the values of string objects x and y, such that after the call to this function, the value of x is the one which was on y before the call, and the value of y is that of x.

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